darkcomet | ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d

Analysis

max time kernel
211s
max time network
100s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
05/12/2022, 19:04

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General

Target

ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Size

658KB
MD5

27dc947c084f959ccfab22706822eff0
SHA1

cb337c0efdba3a865f0d01cd84d0f8f03c276dfe
SHA256

ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d
SHA512

a872c2ed1dca01ce97a1aca3688b65c28cd81f7ba3df3e4cbad6cc996c76de7ec45e5742cc4dc3f83af617354d59d4844bcf40ead6d48a688f5b722c21d1b5ec
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hW:KZ1xuVVjfFoynPaVBUR8f+kN10EBo

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

fawkes.zapto.org:1604

Mutex

DC_MUTEX-XYFF6TV

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
ak2ULVVuYJuG
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe

Executes dropped EXE 1 IoCs

pid	Process
920	msdcsc.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
436	attrib.exe
1104	attrib.exe

Loads dropped DLL 2 IoCs

pid	Process
960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
920	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeSecurityPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeTakeOwnershipPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeLoadDriverPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeSystemProfilePrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeSystemtimePrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeProfSingleProcessPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeIncBasePriorityPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeCreatePagefilePrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeBackupPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeRestorePrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeShutdownPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeDebugPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeSystemEnvironmentPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeChangeNotifyPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeRemoteShutdownPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeUndockPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeManageVolumePrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeImpersonatePrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeCreateGlobalPrivilege	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: 33	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: 34	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: 35	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeIncreaseQuotaPrivilege	920	msdcsc.exe
Token: SeSecurityPrivilege	920	msdcsc.exe
Token: SeTakeOwnershipPrivilege	920	msdcsc.exe
Token: SeLoadDriverPrivilege	920	msdcsc.exe
Token: SeSystemProfilePrivilege	920	msdcsc.exe
Token: SeSystemtimePrivilege	920	msdcsc.exe
Token: SeProfSingleProcessPrivilege	920	msdcsc.exe
Token: SeIncBasePriorityPrivilege	920	msdcsc.exe
Token: SeCreatePagefilePrivilege	920	msdcsc.exe
Token: SeBackupPrivilege	920	msdcsc.exe
Token: SeRestorePrivilege	920	msdcsc.exe
Token: SeShutdownPrivilege	920	msdcsc.exe
Token: SeDebugPrivilege	920	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	920	msdcsc.exe
Token: SeChangeNotifyPrivilege	920	msdcsc.exe
Token: SeRemoteShutdownPrivilege	920	msdcsc.exe
Token: SeUndockPrivilege	920	msdcsc.exe
Token: SeManageVolumePrivilege	920	msdcsc.exe
Token: SeImpersonatePrivilege	920	msdcsc.exe
Token: SeCreateGlobalPrivilege	920	msdcsc.exe
Token: 33	920	msdcsc.exe
Token: 34	920	msdcsc.exe
Token: 35	920	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
920	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 960 wrote to memory of 1456	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	28
PID 960 wrote to memory of 1456	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	28
PID 960 wrote to memory of 1456	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	28
PID 960 wrote to memory of 1456	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	28
PID 960 wrote to memory of 940	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	29
PID 960 wrote to memory of 940	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	29
PID 960 wrote to memory of 940	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	29
PID 960 wrote to memory of 940	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	29
PID 940 wrote to memory of 436	940	cmd.exe	32
PID 940 wrote to memory of 436	940	cmd.exe	32
PID 940 wrote to memory of 436	940	cmd.exe	32
PID 940 wrote to memory of 436	940	cmd.exe	32
PID 1456 wrote to memory of 1104	1456	cmd.exe	33
PID 1456 wrote to memory of 1104	1456	cmd.exe	33
PID 1456 wrote to memory of 1104	1456	cmd.exe	33
PID 1456 wrote to memory of 1104	1456	cmd.exe	33
PID 960 wrote to memory of 920	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	34
PID 960 wrote to memory of 920	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	34
PID 960 wrote to memory of 920	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	34
PID 960 wrote to memory of 920	960	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	34
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35
PID 920 wrote to memory of 1212	920	msdcsc.exe	35

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
436	attrib.exe
1104	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
"C:\Users\Admin\AppData\Local\Temp\ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1456
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:940
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:436
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:920
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:1212

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
27dc947c084f959ccfab22706822eff0

SHA1
cb337c0efdba3a865f0d01cd84d0f8f03c276dfe

SHA256
ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d

SHA512
a872c2ed1dca01ce97a1aca3688b65c28cd81f7ba3df3e4cbad6cc996c76de7ec45e5742cc4dc3f83af617354d59d4844bcf40ead6d48a688f5b722c21d1b5ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
27dc947c084f959ccfab22706822eff0

SHA1
cb337c0efdba3a865f0d01cd84d0f8f03c276dfe

SHA256
ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d

SHA512
a872c2ed1dca01ce97a1aca3688b65c28cd81f7ba3df3e4cbad6cc996c76de7ec45e5742cc4dc3f83af617354d59d4844bcf40ead6d48a688f5b722c21d1b5ec

Download Submit
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
27dc947c084f959ccfab22706822eff0

SHA1
cb337c0efdba3a865f0d01cd84d0f8f03c276dfe

SHA256
ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d

SHA512
a872c2ed1dca01ce97a1aca3688b65c28cd81f7ba3df3e4cbad6cc996c76de7ec45e5742cc4dc3f83af617354d59d4844bcf40ead6d48a688f5b722c21d1b5ec

Download Submit
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
27dc947c084f959ccfab22706822eff0

SHA1
cb337c0efdba3a865f0d01cd84d0f8f03c276dfe

SHA256
ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d

SHA512
a872c2ed1dca01ce97a1aca3688b65c28cd81f7ba3df3e4cbad6cc996c76de7ec45e5742cc4dc3f83af617354d59d4844bcf40ead6d48a688f5b722c21d1b5ec

Download Submit
memory/960-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads