SYMBOLCOMMON_NAMEaka. SYNONYMS
win.tinyloader (Back to overview)

TinyLoader

Actor(s): Tiny Spider


There is no description at this point.

References
2020-03-04CrowdStrikeCrowdStrike
@techreport{crowdstrike:20200304:2020:818c85f, author = {CrowdStrike}, title = {{2020 CrowdStrike Global Threat Report}}, date = {2020-03-04}, institution = {CrowdStrike}, url = {https://go.crowdstrike.com/rs/281-OBQ-266/images/Report2020CrowdStrikeGlobalThreatReport.pdf}, language = {English}, urldate = {2020-07-24} } 2020 CrowdStrike Global Threat Report
MESSAGETAP More_eggs 8.t Dropper Anchor BabyShark BadNews Clop Cobalt Strike CobInt Cobra Carbon System Cutwail DanaBot Dharma DoppelPaymer Dridex Emotet FlawedAmmyy FriedEx Gandcrab Get2 IcedID ISFB KerrDown LightNeuron LockerGoga Maze MECHANICAL Necurs Nokki Outlook Backdoor Phobos Ransomware Predator The Thief QakBot REvil RobinHood Ryuk SDBbot Skipper SmokeLoader TerraRecon TerraStealer TerraTV TinyLoader TrickBot vidar Winnti ANTHROPOID SPIDER Anunak APT31 APT39 BlackTech BuhTrap Charming Kitten CLOCKWORD SPIDER DOPPEL SPIDER Gamaredon Group Leviathan MONTY SPIDER Mustang Panda NARWHAL SPIDER NOCTURNAL SPIDER Pinchy Spider Pirate Panda Salty Spider SCULLY SPIDER SMOKY SPIDER Thrip VENOM SPIDER
2016-05-10ProofpointMatthew Mesa, Darien Huss
@online{mesa:20160510:setting:2b54ce3, author = {Matthew Mesa and Darien Huss}, title = {{Setting Sights On Retail: AbaddonPOS Now Targeting Specific POS Software}}, date = {2016-05-10}, organization = {Proofpoint}, url = {https://www.proofpoint.com/us/threat-insight/post/abaddonpos-now-targeting-specific-pos-software}, language = {English}, urldate = {2019-12-20} } Setting Sights On Retail: AbaddonPOS Now Targeting Specific POS Software
AbaddonPOS TinyLoader
2015-11-11ProofpointDarien Huss
@online{huss:20151111:abaddonpos:ca72c4c, author = {Darien Huss}, title = {{AbaddonPOS: A new point of sale threat linked to Vawtrak}}, date = {2015-11-11}, organization = {Proofpoint}, url = {https://www.proofpoint.com/us/threat-insight/post/AbaddonPOS-A-New-Point-Of-Sale-Threat-Linked-To-Vawtrak}, language = {English}, urldate = {2019-12-20} } AbaddonPOS: A new point of sale threat linked to Vawtrak
AbaddonPOS TinyLoader
Yara Rules
[TLP:WHITE] win_tinyloader_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_tinyloader_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.tinyloader"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { c1c010 6689c8 90 6a40 6800300000 6800800200 }
            // n = 6, score = 100
            //   c1c010               | rol                 eax, 0x10
            //   6689c8               | mov                 ax, cx
            //   90                   | nop                 
            //   6a40                 | push                0x40
            //   6800300000           | push                0x3000
            //   6800800200           | push                0x28000

        $sequence_1 = { ff15???????? e8???????? 53 68656c6c45 7865 }
            // n = 5, score = 100
            //   ff15????????         |                     
            //   e8????????           |                     
            //   53                   | push                ebx
            //   68656c6c45           | push                0x456c6c65
            //   7865                 | js                  0x67

        $sequence_2 = { 637574 6541 0050ff 15???????? c705????????00010000 68???????? 68???????? }
            // n = 7, score = 100
            //   637574               | arpl                word ptr [ebp + 0x74], si
            //   6541                 | inc                 ecx
            //   0050ff               | add                 byte ptr [eax - 1], dl
            //   15????????           |                     
            //   c705????????00010000     |     
            //   68????????           |                     
            //   68????????           |                     

        $sequence_3 = { 0500200000 8985a8050000 0500080000 894508 0500200000 }
            // n = 5, score = 100
            //   0500200000           | add                 eax, 0x2000
            //   8985a8050000         | mov                 dword ptr [ebp + 0x5a8], eax
            //   0500080000           | add                 eax, 0x800
            //   894508               | mov                 dword ptr [ebp + 8], eax
            //   0500200000           | add                 eax, 0x2000

        $sequence_4 = { 81fb04030000 730d 90 83c004 90 }
            // n = 5, score = 100
            //   81fb04030000         | cmp                 ebx, 0x304
            //   730d                 | jae                 0xf
            //   90                   | nop                 
            //   83c004               | add                 eax, 4
            //   90                   | nop                 

        $sequence_5 = { f7d2 f7d1 5b 89d0 c1c010 6689c8 90 }
            // n = 7, score = 100
            //   f7d2                 | not                 edx
            //   f7d1                 | not                 ecx
            //   5b                   | pop                 ebx
            //   89d0                 | mov                 eax, edx
            //   c1c010               | rol                 eax, 0x10
            //   6689c8               | mov                 ax, cx
            //   90                   | nop                 

        $sequence_6 = { 7402 eb42 8b4500 83c00c ffd0 31db }
            // n = 6, score = 100
            //   7402                 | je                  4
            //   eb42                 | jmp                 0x44
            //   8b4500               | mov                 eax, dword ptr [ebp]
            //   83c00c               | add                 eax, 0xc
            //   ffd0                 | call                eax
            //   31db                 | xor                 ebx, ebx

        $sequence_7 = { 8b4500 8b8000040000 83f80c 7702 eb28 83e80c 39c3 }
            // n = 7, score = 100
            //   8b4500               | mov                 eax, dword ptr [ebp]
            //   8b8000040000         | mov                 eax, dword ptr [eax + 0x400]
            //   83f80c               | cmp                 eax, 0xc
            //   7702                 | ja                  4
            //   eb28                 | jmp                 0x2a
            //   83e80c               | sub                 eax, 0xc
            //   39c3                 | cmp                 ebx, eax

        $sequence_8 = { 83c00c 891418 83c304 ebc8 ffb5b8050000 }
            // n = 5, score = 100
            //   83c00c               | add                 eax, 0xc
            //   891418               | mov                 dword ptr [eax + ebx], edx
            //   83c304               | add                 ebx, 4
            //   ebc8                 | jmp                 0xffffffca
            //   ffb5b8050000         | push                dword ptr [ebp + 0x5b8]

        $sequence_9 = { 83bd4005000001 7502 eb0c c7854005000000000084 }
            // n = 4, score = 100
            //   83bd4005000001       | cmp                 dword ptr [ebp + 0x540], 1
            //   7502                 | jne                 4
            //   eb0c                 | jmp                 0xe
            //   c7854005000000000084     | mov    dword ptr [ebp + 0x540], 0x84000000

        $sequence_10 = { ff15???????? 90 8b1d???????? 90 8998f8070000 }
            // n = 5, score = 100
            //   ff15????????         |                     
            //   90                   | nop                 
            //   8b1d????????         |                     
            //   90                   | nop                 
            //   8998f8070000         | mov                 dword ptr [eax + 0x7f8], ebx

        $sequence_11 = { 813890909090 740e 83fb00 7509 90 3108 90 }
            // n = 7, score = 100
            //   813890909090         | cmp                 dword ptr [eax], 0x90909090
            //   740e                 | je                  0x10
            //   83fb00               | cmp                 ebx, 0
            //   7509                 | jne                 0xb
            //   90                   | nop                 
            //   3108                 | xor                 dword ptr [eax], ecx
            //   90                   | nop                 

        $sequence_12 = { 6a00 ff33 ff7500 ffb5b8050000 ff15???????? }
            // n = 5, score = 100
            //   6a00                 | push                0
            //   ff33                 | push                dword ptr [ebx]
            //   ff7500               | push                dword ptr [ebp]
            //   ffb5b8050000         | push                dword ptr [ebp + 0x5b8]
            //   ff15????????         |                     

        $sequence_13 = { 6a40 6800300000 6800800200 6a00 ff15???????? 90 }
            // n = 6, score = 100
            //   6a40                 | push                0x40
            //   6800300000           | push                0x3000
            //   6800800200           | push                0x28000
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   90                   | nop                 

        $sequence_14 = { e9???????? 8b5d00 81c300040000 6a00 }
            // n = 4, score = 100
            //   e9????????           |                     
            //   8b5d00               | mov                 ebx, dword ptr [ebp]
            //   81c300040000         | add                 ebx, 0x400
            //   6a00                 | push                0

        $sequence_15 = { 8b5d00 894304 8b5d00 81c300040000 }
            // n = 4, score = 100
            //   8b5d00               | mov                 ebx, dword ptr [ebp]
            //   894304               | mov                 dword ptr [ebx + 4], eax
            //   8b5d00               | mov                 ebx, dword ptr [ebp]
            //   81c300040000         | add                 ebx, 0x400

    condition:
        7 of them and filesize < 40960
}
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