asyncrat | 684d5ffa1b7a96ff0931cf71203c36ed5786ab66059b8c4523b26f6d229af1ca

General

Target

Vovejsb_LetThereBeCarnage.exe
Size

176KB
MD5

59a76eb3b49b4efaf73a9d07fbec362f
SHA1

1f310aa07e7994b5d50c0f257106987d52150dfc
SHA256

684d5ffa1b7a96ff0931cf71203c36ed5786ab66059b8c4523b26f6d229af1ca
SHA512

4916b45deed3158d746048c3090688adc85a6ca33386767f09b757e92a3440a95d249785987101358c932ec0326f120551356f589715b591e274c4a48d39f46f
SSDEEP

3072:ks7KR29f+GPsBrFK5fQ9bwgZ4qWyqvLINPCU9DRvz:3+ESEfQ9btqqPqvLIfx

Score

10^/10

asyncrat rat

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 1 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	Vovejsb_LetThereBeCarnage.exe

Executes dropped EXE 1 IoCs

pid	Process
740	Sus.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3428	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5024	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe
2704	Vovejsb_LetThereBeCarnage.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2704	Vovejsb_LetThereBeCarnage.exe
Token: SeDebugPrivilege	740	Sus.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 3980	2704	Vovejsb_LetThereBeCarnage.exe	83
PID 2704 wrote to memory of 3980	2704	Vovejsb_LetThereBeCarnage.exe	83
PID 2704 wrote to memory of 2204	2704	Vovejsb_LetThereBeCarnage.exe	85
PID 2704 wrote to memory of 2204	2704	Vovejsb_LetThereBeCarnage.exe	85
PID 2204 wrote to memory of 3428	2204	cmd.exe	87
PID 2204 wrote to memory of 3428	2204	cmd.exe	87
PID 3980 wrote to memory of 5024	3980	cmd.exe	88
PID 3980 wrote to memory of 5024	3980	cmd.exe	88
PID 2204 wrote to memory of 740	2204	cmd.exe	89
PID 2204 wrote to memory of 740	2204	cmd.exe	89

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Vovejsb_LetThereBeCarnage.exe
"C:\Users\Admin\AppData\Local\Temp\Vovejsb_LetThereBeCarnage.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn Sus /tr 'C:\Users\Admin\AppData\Roaming\Sus.exe' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3980
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn Sus /tr 'C:\Users\Admin\AppData\Roaming\Sus.exe'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5024
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8B19.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3428
- - C:\Users\Admin\AppData\Roaming\Sus.exe
    C:\Users\Admin\AppData\Roaming\Sus.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8B19.tmp.bat

Filesize
141B

MD5
d7a93344ef5332c57d2c6e33b5708a70

SHA1
83d40cad48eac05810fb297f2f1fc86fc70a6512

SHA256
24208469ad7f52be0501b1a22b626f6d0218f66d2fae5c879cb6f01fa38b97fd

SHA512
af427265b3ef2f11372420fbc338aeb024a91297d7a0d10296324ffa5bdf0c3aaac106a46f124ee4a6cc87caf4611fd73fb14893f7b6c597f5bce0e0ebc85285

Download Submit
C:\Users\Admin\AppData\Roaming\Sus.exe

Filesize
176KB

MD5
59a76eb3b49b4efaf73a9d07fbec362f

SHA1
1f310aa07e7994b5d50c0f257106987d52150dfc

SHA256
684d5ffa1b7a96ff0931cf71203c36ed5786ab66059b8c4523b26f6d229af1ca

SHA512
4916b45deed3158d746048c3090688adc85a6ca33386767f09b757e92a3440a95d249785987101358c932ec0326f120551356f589715b591e274c4a48d39f46f

Download Submit
memory/2704-0-0x00007FFA38393000-0x00007FFA38395000-memory.dmp

Filesize
8KB

Download
memory/2704-1-0x0000000000970000-0x00000000009A0000-memory.dmp

Filesize
192KB

Download
memory/2704-2-0x00007FFA38390000-0x00007FFA38E51000-memory.dmp

Filesize
10.8MB

Download
memory/2704-7-0x00007FFA38390000-0x00007FFA38E51000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads