dorkbot | a9395101f1587a91a1ac9dbea900b977585eba0ed4b32ac9accf2563be457b6f

General

Target
jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
Size 132KB
Sample261012-eyj7lsfe22
SHA256 a9395101f1587a91a1ac9dbea900b977585eba0ed4b32ac9accf2563be457b6f
MD5 65ddfebc75bb1e81391e2b8dbcb36918
SHA1 4893c88781d9e5a823e9ea807152af56a1102d4d
SHA512 620cdb678d17108b99875841b1a74a1a72ad5ee4931b83bdd5540f399e984c1e6fb78cc5519ec7a8df3968ff769dc021386dc51151f6f2894e501feeb5487822
SSDEEP 3072:ycmXDbS2Dtx1CUiIdMrDa0T/6lgwfJlb61tjR2:fmXDbSkrJWu0/SfD61tjR2
TLSH
T134D3D02BE6001D6AF028C9F09CD3D1E7114B2ECA4A5A5F1B23DD7BDD0A3E511A9E3D58
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware discovery dorkbot spyware worm

Malware Config

Signatures

Family: Dorkbot
Dorkbot is a worm written in C++.
worm dorkbot

Detects Dorkbot worm 5 IoCs

resource	yara_rule
behavioral1/memory/4268-2-0x0000000000400000-0x000000000044E000-memory.dmp	family_dorkbot
behavioral1/memory/4268-4-0x0000000000400000-0x000000000044E000-memory.dmp	family_dorkbot
behavioral1/memory/4268-5-0x0000000000400000-0x000000000044E000-memory.dmp	family_dorkbot
behavioral1/memory/4268-6-0x0000000000700000-0x000000000074E000-memory.dmp	family_dorkbot
behavioral1/memory/4268-8-0x0000000000400000-0x000000000044E000-memory.dmp	family_dorkbot

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4272 set thread context of 4268	4272	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	88

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 24 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31283713"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "713489710"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31283713"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "711770874"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{55A17735-C5F4-11F1-8007-6E24823C6C3E} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "498543838"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1696934516-3600988056-1840298893-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4268	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
4268	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
4268	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4268	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
Token: SeDebugPrivilege	4712	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4984	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
4272	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
4984	IEXPLORE.EXE
4984	IEXPLORE.EXE
4712	IEXPLORE.EXE
4712	IEXPLORE.EXE
4712	IEXPLORE.EXE
4712	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4272 wrote to memory of 4268	4272	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	88
PID 4272 wrote to memory of 4268	4272	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	88
PID 4272 wrote to memory of 4268	4272	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	88
PID 4272 wrote to memory of 4268	4272	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	88
PID 4272 wrote to memory of 4268	4272	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	88
PID 4272 wrote to memory of 4268	4272	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	88
PID 4268 wrote to memory of 4836	4268	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	94
PID 4836 wrote to memory of 4984	4836	iexplore.exe	95
PID 4984 wrote to memory of 4712	4984	IEXPLORE.EXE	96
PID 4268 wrote to memory of 4712	4268	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	96
PID 4268 wrote to memory of 4712	4268	jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe	96

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4272
- C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe
  "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Backdoor.Win32.Ruskill.fwz.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4268
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4836
  - - C:\Program Files\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4984
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4984 CREDAT:17410 /prefetch:2
        5⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:4712

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959
Size 471B
SHA256 3bd579f816218f93666c1b09ee5c5aed0b7cb51ea3765895f09743e4a9480c13
MD5 2e36f0a88e9a63daa9dc338063ed8c0d
SHA1 88761332338126622f8ff2d48b5af3df11d78edf
SHA512 67f7c60df8da4b83a19c69970c139f82c55d3d271c4dc6b95e6427cd7e1b693b94ae97ae9a5af1d69e8689c7141aed3d3e101cbe4ed66e589b0c0d08b201dda9
TLSH
T1A2F0DC5360BDBCD6EE941BDC03FDA9797420A4B3048483214DBC49D00E213AE1F3B074
MD5 SHA1 SHA512 TLSH

Submit Download

E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959
Size 416B
SHA256 e77007013192e01dbf3d6f5b467fc597e11a26a29f45f65a08d97057a4e5db83
MD5 44f4374b4446e373e1dbc7ef80e222f5
SHA1 8061a0ba426c08d9657178b1e0e0acf3959b8041
SHA512 b7a3f8fbdf2a20da56343e037ce75fbea134dc7ee30e84b5954e604514daeb839c2a48664cdbb2ba1e7183a444c57eff69578fb71e93931a9746ee33bea7aeef
TLSH
T17CE0C03412FB411FF8F6D0394BE5743398AEF123052CA2B439C48B04A706600AC12E25
MD5 SHA1 SHA512 TLSH

Submit Download

suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\EFFG4FKD\suggestions[1].en-US
Size 17KB
SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
MD5 5a34cb996293fde2cb7a4ac89587393a
SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
TLSH
T13A823E4E61D88F57EA47B6B2D9084EA702E0C8794716DB93D62CFE63CDE33B25D02161
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4268-2-0x0000000000400000-0x000000000044E000-memory.dmp

Download

memory/4268-4-0x0000000000400000-0x000000000044E000-memory.dmp

Download

memory/4268-5-0x0000000000400000-0x000000000044E000-memory.dmp

Download

memory/4268-6-0x0000000000700000-0x000000000074E000-memory.dmp

Download

memory/4268-8-0x0000000000400000-0x000000000044E000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads