asyncrat | 6c13935ce459215baf7b863cf206747125cacca60793e81ca06ee66139eeba79

General

Target

vbc.exe
Size

455KB
MD5

f383aca77ec8694ab609f6c6ee464bde
SHA1

836abb931164edf8ea1ec1437b94eed0fc568049
SHA256

6c13935ce459215baf7b863cf206747125cacca60793e81ca06ee66139eeba79
SHA512

7acba871babb6cba09d1e444387d4d282f65b951b16127145521cd70915995425de6efc72a5f6400c81371734e5a47eaa33ed76ce06586f45fc8df1108af4040

Score

10^/10

asyncrat venom clients rat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

C2

194.5.97.88:5050

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 6 IoCs

rat

resource	yara_rule
behavioral1/memory/1332-63-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1332-64-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1332-65-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1332-66-0x000000000041099E-mapping.dmp	asyncrat
behavioral1/memory/1332-69-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1332-71-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1332	InstallUtil.exe

Loads dropped DLL 1 IoCs

pid	Process
1648	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1648 set thread context of 1332	1648	vbc.exe	27

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1648	vbc.exe
1648	vbc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	vbc.exe
Token: SeDebugPrivilege	1332	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27
PID 1648 wrote to memory of 1332	1648	vbc.exe	27

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1332

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

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

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/1332-63-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1332-60-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1332-61-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1332-64-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1332-65-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1332-69-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1332-71-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1648-58-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1648-57-0x0000000000660000-0x000000000067A000-memory.dmp

Filesize
104KB

Download
memory/1648-54-0x0000000000D80000-0x0000000000DF6000-memory.dmp

Filesize
472KB

Download
memory/1648-56-0x0000000075D21000-0x0000000075D23000-memory.dmp

Filesize
8KB

Download
memory/1648-55-0x00000000005F0000-0x0000000000620000-memory.dmp

Filesize
192KB

Download

Analysis

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