asyncrat | 84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb

General

Target

84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe
Size

11.7MB
MD5

4cbf5db190e95e44d2a637e3513cb39f
SHA1

0f83db9b94d8d3975116732282364ee7aa8d142f
SHA256

84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb
SHA512

a4d0fb58ceabe86f7f3ce81624d7ab60fcde15bed4b928eaf03ed431230052b814d0a483b67ca42afa5dbb0fd9bb02043a6c52db4b980b6fde7d0357d5773193
SSDEEP

196608:0vcp1Se3LVaChCXpogOPA53p79DMG/TiOyg:13h/g/OE3p5Dxby

Score

10^/10

asyncrat default discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.2

Botnet

Default

C2

94.156.69.161:8900

94.156.69.161:4443

94.156.69.163:8900

94.156.69.163:4443

94.156.69.164:8900

94.156.69.164:4443

94.156.69.165:8900

94.156.69.165:4443

94.156.69.166:8900

94.156.69.166:4443

91.92.248.82:8900

91.92.248.82:4443

91.92.251.136:8900

91.92.251.136:4443

91.92.251.153:8900

91.92.251.153:4443

91.92.251.159:8900

91.92.251.159:4443

91.92.251.179:8900

91.92.251.179:4443

Mutex

sqhylkrhlwjrecxiv

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Detects executables attemping to enumerate video devices using WMI 5 IoCs

resource	yara_rule
behavioral1/memory/2040-17-0x0000000000400000-0x0000000000418000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
behavioral1/memory/2040-15-0x0000000000400000-0x0000000000418000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
behavioral1/memory/2040-11-0x0000000000400000-0x0000000000418000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
behavioral1/memory/2040-9-0x0000000000400000-0x0000000000418000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
behavioral1/memory/2040-19-0x0000000000400000-0x0000000000418000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice

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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\skwpfwdg = "C:\\Users\\Admin\\AppData\\Roaming\\fat\\dete\\1.0.0.0\\mcsfwservice.exe"	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2188 set thread context of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2040	RegAsm.exe
2040	RegAsm.exe
2040	RegAsm.exe
2040	RegAsm.exe
2040	RegAsm.exe
2040	RegAsm.exe
2040	RegAsm.exe
2040	RegAsm.exe
2040	RegAsm.exe
2040	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2040	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28
PID 2188 wrote to memory of 2040	2188	84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe	28

C:\Users\Admin\AppData\Local\Temp\84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe
"C:\Users\Admin\AppData\Local\Temp\84c2b21f5b3c48dfb7481094b8e7f8c2f56e041fe3244b1a608bc264d83536bb.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar1AD8.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
memory/2040-9-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2040-5-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2040-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2040-17-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2040-15-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2040-11-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2040-19-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2040-7-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2188-4-0x0000000008970000-0x0000000008D6E000-memory.dmp

Filesize
4.0MB

Download
memory/2188-0-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2188-21-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2188-2-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2188-1-0x0000000000050000-0x0000000000C14000-memory.dmp

Filesize
11.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads