darkcomet | a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf

General

Target

a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
Size

520KB
MD5

452b72638cf014d97a9b5a219e4685f9
SHA1

df7b8e92163dfe5bcfd1f1f8ea832d5c655d457c
SHA256

a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf
SHA512

a30e2cb3bbe1138bf148dcca0187c366f60b064115820b5848f2f177aafbfd97cc3ed2d301ff3dd53001e46337b97595f7df6a014aa3c3ebc69628f22d03623f

Score

10^/10

darkcomet persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Executes dropped EXE 3 IoCs

Processes:

winupd.exewinupd.exewinupd.exe

pid process

1772 winupd.exe
980 winupd.exe
1648 winupd.exe

pid	process
1772	winupd.exe
980	winupd.exe
1648	winupd.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1648-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1648-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe

pid	process
1632	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
1632	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\winupd.exe -notray"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exewinupd.exe

description	pid	process	target process
PID 1620 set thread context of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1772 set thread context of 980	1772	winupd.exe	winupd.exe
PID 1772 set thread context of 1648	1772	winupd.exe	winupd.exe

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

System Information Discovery
T1082
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

ipconfig.exe

pid process

984 ipconfig.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

1224 reg.exe

pid	process
984	ipconfig.exe

pid	process
1224	reg.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

winupd.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1648	winupd.exe
Token: SeSecurityPrivilege	1648	winupd.exe
Token: SeTakeOwnershipPrivilege	1648	winupd.exe
Token: SeLoadDriverPrivilege	1648	winupd.exe
Token: SeSystemProfilePrivilege	1648	winupd.exe
Token: SeSystemtimePrivilege	1648	winupd.exe
Token: SeProfSingleProcessPrivilege	1648	winupd.exe
Token: SeIncBasePriorityPrivilege	1648	winupd.exe
Token: SeCreatePagefilePrivilege	1648	winupd.exe
Token: SeBackupPrivilege	1648	winupd.exe
Token: SeRestorePrivilege	1648	winupd.exe
Token: SeShutdownPrivilege	1648	winupd.exe
Token: SeDebugPrivilege	1648	winupd.exe
Token: SeSystemEnvironmentPrivilege	1648	winupd.exe
Token: SeChangeNotifyPrivilege	1648	winupd.exe
Token: SeRemoteShutdownPrivilege	1648	winupd.exe
Token: SeUndockPrivilege	1648	winupd.exe
Token: SeManageVolumePrivilege	1648	winupd.exe
Token: SeImpersonatePrivilege	1648	winupd.exe
Token: SeCreateGlobalPrivilege	1648	winupd.exe
Token: 33	1648	winupd.exe
Token: 34	1648	winupd.exe
Token: 35	1648	winupd.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exea7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exewinupd.exewinupd.exewinupd.exe

pid	process
1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
1632	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
1772	winupd.exe
980	winupd.exe
1648	winupd.exe

Suspicious use of WriteProcessMemory 44 IoCs

Processes:

a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exea7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exewinupd.exewinupd.exeipconfig.execmd.exe

description	pid	process	target process
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1620 wrote to memory of 1632	1620	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
PID 1632 wrote to memory of 1772	1632	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	winupd.exe
PID 1632 wrote to memory of 1772	1632	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	winupd.exe
PID 1632 wrote to memory of 1772	1632	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	winupd.exe
PID 1632 wrote to memory of 1772	1632	a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 980	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 1648	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 1648	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 1648	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 1648	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 1648	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 1648	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 1648	1772	winupd.exe	winupd.exe
PID 1772 wrote to memory of 1648	1772	winupd.exe	winupd.exe
PID 980 wrote to memory of 984	980	winupd.exe	ipconfig.exe
PID 980 wrote to memory of 984	980	winupd.exe	ipconfig.exe
PID 980 wrote to memory of 984	980	winupd.exe	ipconfig.exe
PID 980 wrote to memory of 984	980	winupd.exe	ipconfig.exe
PID 980 wrote to memory of 984	980	winupd.exe	ipconfig.exe
PID 980 wrote to memory of 984	980	winupd.exe	ipconfig.exe
PID 984 wrote to memory of 516	984	ipconfig.exe	cmd.exe
PID 984 wrote to memory of 516	984	ipconfig.exe	cmd.exe
PID 984 wrote to memory of 516	984	ipconfig.exe	cmd.exe
PID 984 wrote to memory of 516	984	ipconfig.exe	cmd.exe
PID 516 wrote to memory of 1224	516	cmd.exe	reg.exe
PID 516 wrote to memory of 1224	516	cmd.exe	reg.exe
PID 516 wrote to memory of 1224	516	cmd.exe	reg.exe
PID 516 wrote to memory of 1224	516	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
"C:\Users\Admin\AppData\Local\Temp\a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1620

C:\Users\Admin\AppData\Local\Temp\a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe
"C:\Users\Admin\AppData\Local\Temp\a7c4aae68e13b16ed7d916ba7cde189381e597934b05a26d113a97c8ae8afdbf.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1632

C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1772

C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:980

C:\Windows\SysWOW64\ipconfig.exe
"C:\Windows\system32\ipconfig.exe"
5⤵
- Gathers network information
- Suspicious use of WriteProcessMemory
PID:984

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\HVRUXWYK.bat" "
6⤵
- Suspicious use of WriteProcessMemory
PID:516

C:\Windows\SysWOW64\reg.exe
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v WinUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray" /f
7⤵
- Adds Run key to start application
- Modifies registry key
PID:1224

C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1648

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\HVRUXWYK.bat
MD5
cac890d00365d07b9ca89def17cc3a36

SHA1
6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

SHA256
4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

SHA512
124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
MD5
da95da82f5320b8ea9e8f22f2393cd5c

SHA1
7d542043d83cdefd02e77334213fb6c1cbd26946

SHA256
a1d3d0dabc414bb238db7a5c60f2eeec42787745f2ed2da23c11808183c60cff

SHA512
fb9c073c9648209307f378d11bc1a3248d741d410dd1d012f720e730b5c79a3284d8aa930fb77e2c4ebc2d878a8e67a8072165c7b47ac075bf8713b3b451e607

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
MD5
da95da82f5320b8ea9e8f22f2393cd5c

SHA1
7d542043d83cdefd02e77334213fb6c1cbd26946

SHA256
a1d3d0dabc414bb238db7a5c60f2eeec42787745f2ed2da23c11808183c60cff

SHA512
fb9c073c9648209307f378d11bc1a3248d741d410dd1d012f720e730b5c79a3284d8aa930fb77e2c4ebc2d878a8e67a8072165c7b47ac075bf8713b3b451e607

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
MD5
da95da82f5320b8ea9e8f22f2393cd5c

SHA1
7d542043d83cdefd02e77334213fb6c1cbd26946

SHA256
a1d3d0dabc414bb238db7a5c60f2eeec42787745f2ed2da23c11808183c60cff

SHA512
fb9c073c9648209307f378d11bc1a3248d741d410dd1d012f720e730b5c79a3284d8aa930fb77e2c4ebc2d878a8e67a8072165c7b47ac075bf8713b3b451e607

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
MD5
da95da82f5320b8ea9e8f22f2393cd5c

SHA1
7d542043d83cdefd02e77334213fb6c1cbd26946

SHA256
a1d3d0dabc414bb238db7a5c60f2eeec42787745f2ed2da23c11808183c60cff

SHA512
fb9c073c9648209307f378d11bc1a3248d741d410dd1d012f720e730b5c79a3284d8aa930fb77e2c4ebc2d878a8e67a8072165c7b47ac075bf8713b3b451e607

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
MD5
da95da82f5320b8ea9e8f22f2393cd5c

SHA1
7d542043d83cdefd02e77334213fb6c1cbd26946

SHA256
a1d3d0dabc414bb238db7a5c60f2eeec42787745f2ed2da23c11808183c60cff

SHA512
fb9c073c9648209307f378d11bc1a3248d741d410dd1d012f720e730b5c79a3284d8aa930fb77e2c4ebc2d878a8e67a8072165c7b47ac075bf8713b3b451e607

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
MD5
da95da82f5320b8ea9e8f22f2393cd5c

SHA1
7d542043d83cdefd02e77334213fb6c1cbd26946

SHA256
a1d3d0dabc414bb238db7a5c60f2eeec42787745f2ed2da23c11808183c60cff

SHA512
fb9c073c9648209307f378d11bc1a3248d741d410dd1d012f720e730b5c79a3284d8aa930fb77e2c4ebc2d878a8e67a8072165c7b47ac075bf8713b3b451e607

Download Submit
memory/516-83-0x0000000000000000-mapping.dmp

Download
memory/980-71-0x000000000040140C-mapping.dmp

Download
memory/984-80-0x0000000000000000-mapping.dmp

Download
memory/1224-84-0x0000000000000000-mapping.dmp

Download
memory/1620-67-0x0000000000370000-0x0000000000372000-memory.dmp

Filesize
8KB

Download
memory/1620-68-0x0000000000390000-0x0000000000392000-memory.dmp

Filesize
8KB

Download
memory/1620-66-0x00000000002D0000-0x00000000002D2000-memory.dmp

Filesize
8KB

Download
memory/1632-59-0x0000000076B61000-0x0000000076B63000-memory.dmp

Filesize
8KB

Download
memory/1632-55-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1632-56-0x000000000040140C-mapping.dmp

Download
memory/1648-75-0x00000000004B5670-mapping.dmp

Download
memory/1648-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1648-86-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/1648-85-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1772-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads