darkcomet | 5a0f16fb3fb2947cc41ddc38107c63a831263deed2b98fea26be1bdc2d732bd7

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
02/01/2024, 16:05

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

7ef4bc33ff80810898565ea651d219e4.exe
Size

1.3MB
MD5

7ef4bc33ff80810898565ea651d219e4
SHA1

141d5a5cb4897d92420737dc0f7369010808a289
SHA256

5a0f16fb3fb2947cc41ddc38107c63a831263deed2b98fea26be1bdc2d732bd7
SHA512

f6e125408716172ee161bb7c70e45f28a4dac071045ee6801202235ff73d125b66303f2b0ce4202b3e0de71b5561642a53f776270a13ebaa263c9385d5e2ad41
SSDEEP

24576:1YJ9CLcZ5hJpfEZjN2yZVqYQShiKyLtg8qoQlokK7bBhvGGXWDGMtGZDq:1YL75tf+2mdQXKyhhqblLKPqDGMQZW

Score

10^/10

darkcomet my_setting evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

my_setting

xfreex.dnsd.info:1604

Mutex

DC_MUTEX-YZGQ90J

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
k9dKyxgnhuJj
install
true
offline_keylogger
false
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

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:\\MSDCSC\\msdcsc.exe"	7ef4bc33ff80810898565ea651d219e4.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
2700	attrib.exe
2676	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
1172	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
2240	7ef4bc33ff80810898565ea651d219e4.exe
2240	7ef4bc33ff80810898565ea651d219e4.exe

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-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	7ef4bc33ff80810898565ea651d219e4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Modifies registry class 4 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\us1470611650o.hvc\ = 5b99886699c8ffbf34bf4c131ed5ee53de42a15f6e3260f1	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\us1470611650o.hvc	7ef4bc33ff80810898565ea651d219e4.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\us1470611650o.hvc\ = 5b99886699c8ffbf34bf4c131ed5ee53de42a15f6e3260f1	7ef4bc33ff80810898565ea651d219e4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\us1470611650o.hvc	msdcsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1172	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeSecurityPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeTakeOwnershipPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeLoadDriverPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeSystemProfilePrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeSystemtimePrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeProfSingleProcessPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeIncBasePriorityPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeCreatePagefilePrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeBackupPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeRestorePrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeShutdownPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeDebugPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeSystemEnvironmentPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeChangeNotifyPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeRemoteShutdownPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeUndockPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeManageVolumePrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeImpersonatePrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeCreateGlobalPrivilege	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: 33	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: 34	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: 35	2240	7ef4bc33ff80810898565ea651d219e4.exe
Token: SeIncreaseQuotaPrivilege	1172	msdcsc.exe
Token: SeSecurityPrivilege	1172	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1172	msdcsc.exe
Token: SeLoadDriverPrivilege	1172	msdcsc.exe
Token: SeSystemProfilePrivilege	1172	msdcsc.exe
Token: SeSystemtimePrivilege	1172	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1172	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1172	msdcsc.exe
Token: SeCreatePagefilePrivilege	1172	msdcsc.exe
Token: SeBackupPrivilege	1172	msdcsc.exe
Token: SeRestorePrivilege	1172	msdcsc.exe
Token: SeShutdownPrivilege	1172	msdcsc.exe
Token: SeDebugPrivilege	1172	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1172	msdcsc.exe
Token: SeChangeNotifyPrivilege	1172	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1172	msdcsc.exe
Token: SeUndockPrivilege	1172	msdcsc.exe
Token: SeManageVolumePrivilege	1172	msdcsc.exe
Token: SeImpersonatePrivilege	1172	msdcsc.exe
Token: SeCreateGlobalPrivilege	1172	msdcsc.exe
Token: 33	1172	msdcsc.exe
Token: 34	1172	msdcsc.exe
Token: 35	1172	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2080	2240	7ef4bc33ff80810898565ea651d219e4.exe	34
PID 2240 wrote to memory of 2080	2240	7ef4bc33ff80810898565ea651d219e4.exe	34
PID 2240 wrote to memory of 2080	2240	7ef4bc33ff80810898565ea651d219e4.exe	34
PID 2240 wrote to memory of 2080	2240	7ef4bc33ff80810898565ea651d219e4.exe	34
PID 2240 wrote to memory of 2204	2240	7ef4bc33ff80810898565ea651d219e4.exe	32
PID 2240 wrote to memory of 2204	2240	7ef4bc33ff80810898565ea651d219e4.exe	32
PID 2240 wrote to memory of 2204	2240	7ef4bc33ff80810898565ea651d219e4.exe	32
PID 2240 wrote to memory of 2204	2240	7ef4bc33ff80810898565ea651d219e4.exe	32
PID 2240 wrote to memory of 1172	2240	7ef4bc33ff80810898565ea651d219e4.exe	30
PID 2240 wrote to memory of 1172	2240	7ef4bc33ff80810898565ea651d219e4.exe	30
PID 2240 wrote to memory of 1172	2240	7ef4bc33ff80810898565ea651d219e4.exe	30
PID 2240 wrote to memory of 1172	2240	7ef4bc33ff80810898565ea651d219e4.exe	30
PID 2204 wrote to memory of 2676	2204	cmd.exe	29
PID 2204 wrote to memory of 2676	2204	cmd.exe	29
PID 2204 wrote to memory of 2676	2204	cmd.exe	29
PID 2204 wrote to memory of 2676	2204	cmd.exe	29
PID 2080 wrote to memory of 2700	2080	cmd.exe	28
PID 2080 wrote to memory of 2700	2080	cmd.exe	28
PID 2080 wrote to memory of 2700	2080	cmd.exe	28
PID 2080 wrote to memory of 2700	2080	cmd.exe	28
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35
PID 1172 wrote to memory of 2744	1172	msdcsc.exe	35

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2700	attrib.exe
2676	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7ef4bc33ff80810898565ea651d219e4.exe
"C:\Users\Admin\AppData\Local\Temp\7ef4bc33ff80810898565ea651d219e4.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2240
- C:\MSDCSC\msdcsc.exe
  "C:\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1172
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2744
- 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:2204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\7ef4bc33ff80810898565ea651d219e4.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2080

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\7ef4bc33ff80810898565ea651d219e4.exe" +s +h
1⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2700

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
1⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2676

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1172-17-0x0000000000400000-0x0000000000602000-memory.dmp

Filesize
2.0MB

Download
memory/1172-24-0x0000000000400000-0x0000000000602000-memory.dmp

Filesize
2.0MB

Download
memory/1172-26-0x0000000000960000-0x0000000000961000-memory.dmp

Filesize
4KB

Download
memory/1172-59-0x0000000000400000-0x0000000000602000-memory.dmp

Filesize
2.0MB

Download
memory/2240-0-0x0000000000400000-0x0000000000602000-memory.dmp

Filesize
2.0MB

Download
memory/2240-4-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download
memory/2240-16-0x0000000003F70000-0x0000000004172000-memory.dmp

Filesize
2.0MB

Download
memory/2240-15-0x0000000000400000-0x0000000000602000-memory.dmp

Filesize
2.0MB

Download
memory/2240-3-0x0000000000400000-0x0000000000602000-memory.dmp

Filesize
2.0MB

Download
memory/2744-58-0x0000000000360000-0x0000000000361000-memory.dmp

Filesize
4KB

Download
memory/2744-23-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads