darkcomet | 122fee30475c47117433e3883db850cda735623f2250a10dfe757b6d48f37364

General

Target

JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe
Size

1.2MB
MD5

b65a19239c8c817b58566bdd61b42bdf
SHA1

a5714dde33b29ff4b46454e76332a8b7c5cb0b85
SHA256

122fee30475c47117433e3883db850cda735623f2250a10dfe757b6d48f37364
SHA512

f6c668716033d571ccd6ada91b48899e6d73bba9ae99964921eb2443838351ac5172874bc9bb4cb4686de2422789b179ac8900d896baa20cc7478b40da423016
SSDEEP

12288:Xptm6IeQJGmdPjlEGgIJ1ud1fX/M1uVRK9DUCE9oNCXVP/a98dKybQYx9P35Bm7W:mRe6xhPudBUEVc9A9ogP5Uqj5cW/HO

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Attributes

gencode
install
false
offline_keylogger
false
persistence
false

rc4.plain

Extracted

Family

darkcomet

Botnet

Guest16

C2

frazier.no-ip.biz:1604

Mutex

DC_MUTEX-DMX4QXN

Attributes

InstallPath
Windupdt\widupdate.exe
gencode
ldgecvQqy8.m
install
true
offline_keylogger
true
persistence
true
reg_key
WINDUPDATE

rc4.plain

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\Windupdt\\widupdate.exe"	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
2932	vbc.exe

Loads dropped DLL 6 IoCs

pid	Process
1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe
2180	WerFault.exe
2180	WerFault.exe
2180	WerFault.exe
2180	WerFault.exe
2180	WerFault.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\WinUpdtr\\JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe"	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\WINDUPDATE = "C:\\Windows\\system32\\Windupdt\\widupdate.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Windupdt\widupdate.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\widupdate.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1680 set thread context of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2180	2932	WerFault.exe	30

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2932	vbc.exe
Token: SeSecurityPrivilege	2932	vbc.exe
Token: SeTakeOwnershipPrivilege	2932	vbc.exe
Token: SeLoadDriverPrivilege	2932	vbc.exe
Token: SeSystemProfilePrivilege	2932	vbc.exe
Token: SeSystemtimePrivilege	2932	vbc.exe
Token: SeProfSingleProcessPrivilege	2932	vbc.exe
Token: SeIncBasePriorityPrivilege	2932	vbc.exe
Token: SeCreatePagefilePrivilege	2932	vbc.exe
Token: SeBackupPrivilege	2932	vbc.exe
Token: SeRestorePrivilege	2932	vbc.exe
Token: SeShutdownPrivilege	2932	vbc.exe
Token: SeDebugPrivilege	2932	vbc.exe
Token: SeSystemEnvironmentPrivilege	2932	vbc.exe
Token: SeChangeNotifyPrivilege	2932	vbc.exe
Token: SeRemoteShutdownPrivilege	2932	vbc.exe
Token: SeUndockPrivilege	2932	vbc.exe
Token: SeManageVolumePrivilege	2932	vbc.exe
Token: SeImpersonatePrivilege	2932	vbc.exe
Token: SeCreateGlobalPrivilege	2932	vbc.exe
Token: 33	2932	vbc.exe
Token: 34	2932	vbc.exe
Token: 35	2932	vbc.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 1680 wrote to memory of 2932	1680	JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe	30
PID 2932 wrote to memory of 2852	2932	vbc.exe	31
PID 2932 wrote to memory of 2852	2932	vbc.exe	31
PID 2932 wrote to memory of 2852	2932	vbc.exe	31
PID 2932 wrote to memory of 2852	2932	vbc.exe	31
PID 2932 wrote to memory of 1208	2932	vbc.exe	33
PID 2932 wrote to memory of 1208	2932	vbc.exe	33
PID 2932 wrote to memory of 1208	2932	vbc.exe	33
PID 2932 wrote to memory of 1208	2932	vbc.exe	33
PID 2932 wrote to memory of 2180	2932	vbc.exe	35
PID 2932 wrote to memory of 2180	2932	vbc.exe	35
PID 2932 wrote to memory of 2180	2932	vbc.exe	35
PID 2932 wrote to memory of 2180	2932	vbc.exe	35

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b65a19239c8c817b58566bdd61b42bdf.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2932
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2852
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1208
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2932 -s 640
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat

Filesize
58B

MD5
f132f0ab5cb3552b78e927128e3d10bb

SHA1
92a52e0530e14eb3f6f117b44f55c685d4320960

SHA256
c7e1990999cb0558bfb59b0e75d7d2bf4417b902b70c92a18f1476ac2a239119

SHA512
811663c129c39cce366b2aa2a2e593ff0d7626c839ea6624620cba0983d6a9c9b5b8b2154aedd3592be00d2dc827606bbb9fba479035be15e7ecd838cfa7cb36

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat

Filesize
50B

MD5
b774ae3fb1da087e1f83b4f7b2060e5a

SHA1
97eb9be49ac3af9c851c9e1e84e32bfd53e325a8

SHA256
adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b

SHA512
f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701

Download Submit
\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/1680-0-0x00000000740A1000-0x00000000740A2000-memory.dmp

Filesize
4KB

Download
memory/1680-1-0x00000000740A0000-0x000000007464B000-memory.dmp

Filesize
5.7MB

Download
memory/1680-2-0x00000000740A0000-0x000000007464B000-memory.dmp

Filesize
5.7MB

Download
memory/1680-22-0x00000000740A0000-0x000000007464B000-memory.dmp

Filesize
5.7MB

Download
memory/2932-21-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-15-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-23-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-25-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-19-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2932-16-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-24-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-13-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-12-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-10-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-11-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-14-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-9-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-53-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2932-55-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads