darkcomet | 00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554

General

Target

00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
Size

527KB
MD5

c88959978013b577c7ad729571465050
SHA1

d2f90686d9044e57e0294608289ec63a02a132a5
SHA256

00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554
SHA512

eff7b78e5a326ae7d46177c2f7c8bbd85c5be700c5adac80eaea25b5d0cb59af081f0cf31dcb421cdac76cff9a7718bccb13d90d5d420e8618d8a96cae8befa5
SSDEEP

12288:UXqKvamE4Yy2/Mv6m216SEXWTSPJOhKz0rvcKAqYlr:UaAI3onm2JKULYYB

Score

10^/10

darkcomet winuc discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

WinUC

C2

karinwebcam.no-ip.biz:1004

Mutex

DC_MUTEX-7TG741T

Attributes

InstallPath
explorer\explorer.exe
gencode
ppWkXTKeUVQg
install
true
offline_keylogger
true
persistence
false
reg_key
Explorer

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\\explorer\\explorer.exe"	vbc.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	tmpA921.tmp.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 4 IoCs

pid	Process
2984	tmpA921.tmp.exe
4884	tmpA921.tmp.exe
2464	vbc.exe
2504	explorer.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\javaw.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tmpA921.tmp.exe\""	tmpA921.tmp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Explorer = "C:\\Windows\\system32\\explorer\\explorer.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4684 set thread context of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84

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 5 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	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmpA921.tmp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmpA921.tmp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
Token: SeDebugPrivilege	2984	tmpA921.tmp.exe
Token: SeDebugPrivilege	4884	tmpA921.tmp.exe
Token: SeIncreaseQuotaPrivilege	2464	vbc.exe
Token: SeSecurityPrivilege	2464	vbc.exe
Token: SeTakeOwnershipPrivilege	2464	vbc.exe
Token: SeLoadDriverPrivilege	2464	vbc.exe
Token: SeSystemProfilePrivilege	2464	vbc.exe
Token: SeSystemtimePrivilege	2464	vbc.exe
Token: SeProfSingleProcessPrivilege	2464	vbc.exe
Token: SeIncBasePriorityPrivilege	2464	vbc.exe
Token: SeCreatePagefilePrivilege	2464	vbc.exe
Token: SeBackupPrivilege	2464	vbc.exe
Token: SeRestorePrivilege	2464	vbc.exe
Token: SeShutdownPrivilege	2464	vbc.exe
Token: SeDebugPrivilege	2464	vbc.exe
Token: SeSystemEnvironmentPrivilege	2464	vbc.exe
Token: SeChangeNotifyPrivilege	2464	vbc.exe
Token: SeRemoteShutdownPrivilege	2464	vbc.exe
Token: SeUndockPrivilege	2464	vbc.exe
Token: SeManageVolumePrivilege	2464	vbc.exe
Token: SeImpersonatePrivilege	2464	vbc.exe
Token: SeCreateGlobalPrivilege	2464	vbc.exe
Token: 33	2464	vbc.exe
Token: 34	2464	vbc.exe
Token: 35	2464	vbc.exe
Token: 36	2464	vbc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4684 wrote to memory of 2984	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	82
PID 4684 wrote to memory of 2984	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	82
PID 4684 wrote to memory of 2984	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	82
PID 2984 wrote to memory of 4884	2984	tmpA921.tmp.exe	83
PID 2984 wrote to memory of 4884	2984	tmpA921.tmp.exe	83
PID 2984 wrote to memory of 4884	2984	tmpA921.tmp.exe	83
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 4684 wrote to memory of 2464	4684	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	84
PID 2464 wrote to memory of 2504	2464	vbc.exe	85
PID 2464 wrote to memory of 2504	2464	vbc.exe	85
PID 2464 wrote to memory of 2504	2464	vbc.exe	85

C:\Users\Admin\AppData\Local\Temp\00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
"C:\Users\Admin\AppData\Local\Temp\00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4684
- C:\Users\Admin\AppData\Local\Temp\tmpA921.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmpA921.tmp.exe" /pq
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Users\Admin\AppData\Local\Temp\tmpA921.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpA921.tmp.exe" /px
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4884
- C:\Users\Admin\AppData\Local\Temp\temp_DFGCcffSrq\vbc.exe
  "C:\Users\Admin\AppData\Local\Temp\temp_DFGCcffSrq\vbc.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - 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:2464
- - C:\Windows\SysWOW64\explorer\explorer.exe
    "C:\Windows\system32\explorer\explorer.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2504

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

Query Registry

1

T1012

System Information Discovery

2

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\Microsoft\CLR_v2.0_32\UsageLogs\tmpA921.tmp.exe.log

Filesize
128B

MD5
a5dcc7c9c08af7dddd82be5b036a4416

SHA1
4f998ca1526d199e355ffb435bae111a2779b994

SHA256
e24033ceec97fd03402b03acaaabd1d1e378e83bb1683afbccac760e00f8ead5

SHA512
56035de734836c0c39f0b48641c51c26adb6e79c6c65e23ca96603f71c95b8673e2ef853146e87efc899dd1878d0bbc2c82d91fbf0fce81c552048e986f9bb5a

Download Submit
C:\Users\Admin\AppData\Local\Temp\temp_DFGCcffSrq\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA921.tmp.exe

Filesize
527KB

MD5
c88959978013b577c7ad729571465050

SHA1
d2f90686d9044e57e0294608289ec63a02a132a5

SHA256
00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554

SHA512
eff7b78e5a326ae7d46177c2f7c8bbd85c5be700c5adac80eaea25b5d0cb59af081f0cf31dcb421cdac76cff9a7718bccb13d90d5d420e8618d8a96cae8befa5

Download Submit
memory/2464-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-49-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-35-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-31-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2984-14-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/2984-15-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/2984-16-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/2984-19-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/4684-34-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/4684-0-0x0000000074DE2000-0x0000000074DE3000-memory.dmp

Filesize
4KB

Download
memory/4684-2-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/4684-1-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/4884-33-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/4884-22-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/4884-21-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download
memory/4884-23-0x0000000074DE0000-0x0000000075391000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads