darkcomet | d773d569ee00bea50205a061ee08dbb405ed1afa71ce62b0ea3fbfb2346392ca

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-11-2024 06:11

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General

Target

8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Size

253KB
MD5

8f8da0e5e91029fb2c41744c78470e97
SHA1

cfb4c8031ec0dc0ea913ca7d6a53bd21fd1dd77c
SHA256

d773d569ee00bea50205a061ee08dbb405ed1afa71ce62b0ea3fbfb2346392ca
SHA512

75aee980f72a4b0e9151c95a3f76dcc8aacc412f5d372516428281c62722919640839e3b37c7d32b2466c4e03ff478698495fd71a0c1c44d35750df65943f700
SSDEEP

6144:YD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZ8N:Yl8E4w5huat7UovONzbXwwN

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

skidbooter.no-ip.info:1604

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
pQAJ6hoSubuz
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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\\Documents\\MSDCSC\\msdcsc.exe"	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.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
212	attrib.exe
3980	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4436	notepad.exe

Executes dropped EXE 1 IoCs

pid	Process
3740	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4664-0-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/files/0x0007000000023ca3-7.dat	upx
behavioral2/memory/4664-16-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-20-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-21-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-22-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-23-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-24-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-25-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-26-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-27-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-28-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-29-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-30-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-31-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-32-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-33-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3740-34-0x0000000000400000-0x00000000004BA000-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	msdcsc.exe
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	notepad.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	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3740	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeSecurityPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeBackupPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeRestorePrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeShutdownPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeDebugPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeUndockPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: 33	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: 34	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: 35	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: 36	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3740	msdcsc.exe
Token: SeSecurityPrivilege	3740	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3740	msdcsc.exe
Token: SeLoadDriverPrivilege	3740	msdcsc.exe
Token: SeSystemProfilePrivilege	3740	msdcsc.exe
Token: SeSystemtimePrivilege	3740	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3740	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3740	msdcsc.exe
Token: SeCreatePagefilePrivilege	3740	msdcsc.exe
Token: SeBackupPrivilege	3740	msdcsc.exe
Token: SeRestorePrivilege	3740	msdcsc.exe
Token: SeShutdownPrivilege	3740	msdcsc.exe
Token: SeDebugPrivilege	3740	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3740	msdcsc.exe
Token: SeChangeNotifyPrivilege	3740	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3740	msdcsc.exe
Token: SeUndockPrivilege	3740	msdcsc.exe
Token: SeManageVolumePrivilege	3740	msdcsc.exe
Token: SeImpersonatePrivilege	3740	msdcsc.exe
Token: SeCreateGlobalPrivilege	3740	msdcsc.exe
Token: 33	3740	msdcsc.exe
Token: 34	3740	msdcsc.exe
Token: 35	3740	msdcsc.exe
Token: 36	3740	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3740	msdcsc.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 1740	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	85
PID 4664 wrote to memory of 1740	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	85
PID 4664 wrote to memory of 1740	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	85
PID 4664 wrote to memory of 2952	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	86
PID 4664 wrote to memory of 2952	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	86
PID 4664 wrote to memory of 2952	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	86
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 4436	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	87
PID 4664 wrote to memory of 3740	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	90
PID 4664 wrote to memory of 3740	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	90
PID 4664 wrote to memory of 3740	4664	8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe	90
PID 2952 wrote to memory of 212	2952	cmd.exe	91
PID 2952 wrote to memory of 212	2952	cmd.exe	91
PID 2952 wrote to memory of 212	2952	cmd.exe	91
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 3740 wrote to memory of 4668	3740	msdcsc.exe	92
PID 1740 wrote to memory of 3980	1740	cmd.exe	93
PID 1740 wrote to memory of 3980	1740	cmd.exe	93
PID 1740 wrote to memory of 3980	1740	cmd.exe	93

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
212	attrib.exe
3980	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1740
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2952
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:212
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4436
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3740
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4668

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
253KB

MD5
8f8da0e5e91029fb2c41744c78470e97

SHA1
cfb4c8031ec0dc0ea913ca7d6a53bd21fd1dd77c

SHA256
d773d569ee00bea50205a061ee08dbb405ed1afa71ce62b0ea3fbfb2346392ca

SHA512
75aee980f72a4b0e9151c95a3f76dcc8aacc412f5d372516428281c62722919640839e3b37c7d32b2466c4e03ff478698495fd71a0c1c44d35750df65943f700

Download Submit
memory/3740-23-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-17-0x0000000002080000-0x0000000002081000-memory.dmp

Filesize
4KB

Download
memory/3740-24-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-26-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-25-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-34-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-20-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-21-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-22-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-33-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-32-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-31-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-30-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-27-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-28-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3740-29-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4436-4-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/4664-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4664-1-0x00000000024B0000-0x00000000024B1000-memory.dmp

Filesize
4KB

Download
memory/4664-0-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4668-18-0x0000000000820000-0x0000000000821000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads