darkcomet | 0299f0c9537c0a9c3415221f2939b9d3f964090d9f02e80c1bb3916cfeb346c3

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 08:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
Size

374KB
MD5

eaa3e99c14f2a6c77f1991ba4132b1f1
SHA1

1bb5481c627e599609c1b34e97ba68355de2ba0e
SHA256

0299f0c9537c0a9c3415221f2939b9d3f964090d9f02e80c1bb3916cfeb346c3
SHA512

b2cf4c16d8d11c3760c0b9c09bf8cc14c475011e91dbac469fb659591182a1f584020e27eb690d215cea6ecfce17774644c819f39d4083564eda2a492dd7b8a4
SSDEEP

6144:kzNxMMVANb6ES5Kg3PIuYkk94yNcO43SiIDxfB7GTndEgVpRlrsI4:2xkOHPVg4ydeRI1V8R5sI4

Score

10^/10

darkcomet discovery evasion persistence rat trojan upx

Malware Config

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:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	566.EXE

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1964	attrib.exe
1876	attrib.exe

Executes dropped EXE 2 IoCs

pid	Process
2800	566.EXE
2860	msdcsc.exe

Loads dropped DLL 4 IoCs

pid	Process
2688	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
2688	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
2800	566.EXE
2800	566.EXE

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	566.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2860 set thread context of 2988	2860	msdcsc.exe	39

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2688-0-0x00000000009F0000-0x0000000000AC1000-memory.dmp	upx
behavioral1/memory/2688-10-0x00000000009F0000-0x0000000000AC1000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	566.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2988	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2800	566.EXE
Token: SeSecurityPrivilege	2800	566.EXE
Token: SeTakeOwnershipPrivilege	2800	566.EXE
Token: SeLoadDriverPrivilege	2800	566.EXE
Token: SeSystemProfilePrivilege	2800	566.EXE
Token: SeSystemtimePrivilege	2800	566.EXE
Token: SeProfSingleProcessPrivilege	2800	566.EXE
Token: SeIncBasePriorityPrivilege	2800	566.EXE
Token: SeCreatePagefilePrivilege	2800	566.EXE
Token: SeBackupPrivilege	2800	566.EXE
Token: SeRestorePrivilege	2800	566.EXE
Token: SeShutdownPrivilege	2800	566.EXE
Token: SeDebugPrivilege	2800	566.EXE
Token: SeSystemEnvironmentPrivilege	2800	566.EXE
Token: SeChangeNotifyPrivilege	2800	566.EXE
Token: SeRemoteShutdownPrivilege	2800	566.EXE
Token: SeUndockPrivilege	2800	566.EXE
Token: SeManageVolumePrivilege	2800	566.EXE
Token: SeImpersonatePrivilege	2800	566.EXE
Token: SeCreateGlobalPrivilege	2800	566.EXE
Token: 33	2800	566.EXE
Token: 34	2800	566.EXE
Token: 35	2800	566.EXE
Token: SeIncreaseQuotaPrivilege	2860	msdcsc.exe
Token: SeSecurityPrivilege	2860	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2860	msdcsc.exe
Token: SeLoadDriverPrivilege	2860	msdcsc.exe
Token: SeSystemProfilePrivilege	2860	msdcsc.exe
Token: SeSystemtimePrivilege	2860	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2860	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2860	msdcsc.exe
Token: SeCreatePagefilePrivilege	2860	msdcsc.exe
Token: SeBackupPrivilege	2860	msdcsc.exe
Token: SeRestorePrivilege	2860	msdcsc.exe
Token: SeShutdownPrivilege	2860	msdcsc.exe
Token: SeDebugPrivilege	2860	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2860	msdcsc.exe
Token: SeChangeNotifyPrivilege	2860	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2860	msdcsc.exe
Token: SeUndockPrivilege	2860	msdcsc.exe
Token: SeManageVolumePrivilege	2860	msdcsc.exe
Token: SeImpersonatePrivilege	2860	msdcsc.exe
Token: SeCreateGlobalPrivilege	2860	msdcsc.exe
Token: 33	2860	msdcsc.exe
Token: 34	2860	msdcsc.exe
Token: 35	2860	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2988	iexplore.exe
Token: SeSecurityPrivilege	2988	iexplore.exe
Token: SeTakeOwnershipPrivilege	2988	iexplore.exe
Token: SeLoadDriverPrivilege	2988	iexplore.exe
Token: SeSystemProfilePrivilege	2988	iexplore.exe
Token: SeSystemtimePrivilege	2988	iexplore.exe
Token: SeProfSingleProcessPrivilege	2988	iexplore.exe
Token: SeIncBasePriorityPrivilege	2988	iexplore.exe
Token: SeCreatePagefilePrivilege	2988	iexplore.exe
Token: SeBackupPrivilege	2988	iexplore.exe
Token: SeRestorePrivilege	2988	iexplore.exe
Token: SeShutdownPrivilege	2988	iexplore.exe
Token: SeDebugPrivilege	2988	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2988	iexplore.exe
Token: SeChangeNotifyPrivilege	2988	iexplore.exe
Token: SeRemoteShutdownPrivilege	2988	iexplore.exe
Token: SeUndockPrivilege	2988	iexplore.exe
Token: SeManageVolumePrivilege	2988	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2988	iexplore.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2800	2688	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe	30
PID 2688 wrote to memory of 2800	2688	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe	30
PID 2688 wrote to memory of 2800	2688	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe	30
PID 2688 wrote to memory of 2800	2688	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe	30
PID 2800 wrote to memory of 2620	2800	566.EXE	32
PID 2800 wrote to memory of 2620	2800	566.EXE	32
PID 2800 wrote to memory of 2620	2800	566.EXE	32
PID 2800 wrote to memory of 2620	2800	566.EXE	32
PID 2800 wrote to memory of 2336	2800	566.EXE	34
PID 2800 wrote to memory of 2336	2800	566.EXE	34
PID 2800 wrote to memory of 2336	2800	566.EXE	34
PID 2800 wrote to memory of 2336	2800	566.EXE	34
PID 2620 wrote to memory of 1964	2620	cmd.exe	37
PID 2620 wrote to memory of 1964	2620	cmd.exe	37
PID 2620 wrote to memory of 1964	2620	cmd.exe	37
PID 2620 wrote to memory of 1964	2620	cmd.exe	37
PID 2336 wrote to memory of 1876	2336	cmd.exe	36
PID 2336 wrote to memory of 1876	2336	cmd.exe	36
PID 2336 wrote to memory of 1876	2336	cmd.exe	36
PID 2336 wrote to memory of 1876	2336	cmd.exe	36
PID 2800 wrote to memory of 2860	2800	566.EXE	38
PID 2800 wrote to memory of 2860	2800	566.EXE	38
PID 2800 wrote to memory of 2860	2800	566.EXE	38
PID 2800 wrote to memory of 2860	2800	566.EXE	38
PID 2860 wrote to memory of 2988	2860	msdcsc.exe	39
PID 2860 wrote to memory of 2988	2860	msdcsc.exe	39
PID 2860 wrote to memory of 2988	2860	msdcsc.exe	39
PID 2860 wrote to memory of 2988	2860	msdcsc.exe	39
PID 2860 wrote to memory of 2988	2860	msdcsc.exe	39
PID 2860 wrote to memory of 2988	2860	msdcsc.exe	39

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1964	attrib.exe
1876	attrib.exe

C:\Users\Admin\AppData\Local\Temp\eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Users\Admin\AppData\Local\Temp\566.EXE
  "C:\Users\Admin\AppData\Local\Temp\566.EXE"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2800
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2620
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1964
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2336
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1876
- - C:\Users\Admin\Desktop\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Desktop\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2860
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\566.EXE

Filesize
755KB

MD5
b64c98cc781514eccebb0b1b5c930cbb

SHA1
dc1099f9d3071e510ffae2b5ca7878bc42bb38e4

SHA256
ef785a958c1af0a5c6ad3fe62a2d676fe8b4a723b8d4bb3d1778a0c2cdac7f57

SHA512
2deea429a91b44131553256bc3e88a0e21b3927ee67c038c333da2cd0220143fe6bcb104d6c83f3d7eb9271e298bd74bbbe8a2a3e6c1c227e37ec15ee788110a

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

Filesize
58B

MD5
a35360e6b3f42bd626f57b4146feedc3

SHA1
10ccc72a4b88b2432792998680fbf5742ccc9ea5

SHA256
da2f1eac9ea56a664f280e06859ee2b48cdb0d0e31aa6209f7b7eb9f28eb3eea

SHA512
e7dcde0166a6d8df3b141145613fa40ba451534effb3976e4a4e7e95e5d792d2c20ee14b7555c5bdb8f70abc726d7f7ab802704d5305f2d1b379748bd91cc910

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

Filesize
50B

MD5
b774ae3fb1da087e1f83b4f7b2060e5a

SHA1
97eb9be49ac3af9c851c9e1e84e32bfd53e325a8

SHA256
adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b

SHA512
f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701

Download Submit
memory/2688-0-0x00000000009F0000-0x0000000000AC1000-memory.dmp

Filesize
836KB

Download
memory/2688-10-0x00000000009F0000-0x0000000000AC1000-memory.dmp

Filesize
836KB

Download
memory/2800-12-0x0000000000660000-0x0000000000661000-memory.dmp

Filesize
4KB

Download
memory/2800-43-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/2860-46-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/2988-45-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads