asyncrat | eb3e3b70ceb124de827b5297c2b8e0b42f84ca8bcd71015a9ce9d7aa5a581a43

General

Target

Infected.exe
Size

63KB
MD5

daacc4b40206c4d5e7260dde1a2f6814
SHA1

7f8baeba108d745c44ee23b4a56c58d5893d2889
SHA256

eb3e3b70ceb124de827b5297c2b8e0b42f84ca8bcd71015a9ce9d7aa5a581a43
SHA512

3afd3cbe4ae7e9e500037a1643ba04430687a602d6a4b7ccb9c12e8b350b29fcb37251b9cb9af4528f92719b6ae4391aea5f58aa505dfd6818b9e0cb036dcf64
SSDEEP

768:iqWcYBjjj78ZIC8A+X0iazcBRL5JTk1+T4KSBGHmDbD/ph0oXTOsySuwdpqKYhY7:MZjLXdSJYUbdh9TluwdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

147.185.221.23:45700

Attributes

delay
1
install
true
install_file
urmom.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0029000000045040-11.dat	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-1-5-21-641261377-2215826147-608237349-1000\Control Panel\International\Geo\Nation	Infected.exe

Executes dropped EXE 1 IoCs

pid	Process
1760	urmom.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
3956	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
4380	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe
1164	Infected.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1164	Infected.exe
Token: SeDebugPrivilege	1164	Infected.exe
Token: SeDebugPrivilege	1760	urmom.exe
Token: SeDebugPrivilege	1760	urmom.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 116	1164	Infected.exe	82
PID 1164 wrote to memory of 116	1164	Infected.exe	82
PID 1164 wrote to memory of 4600	1164	Infected.exe	84
PID 1164 wrote to memory of 4600	1164	Infected.exe	84
PID 116 wrote to memory of 4380	116	cmd.exe	86
PID 116 wrote to memory of 4380	116	cmd.exe	86
PID 4600 wrote to memory of 3956	4600	cmd.exe	87
PID 4600 wrote to memory of 3956	4600	cmd.exe	87
PID 4600 wrote to memory of 1760	4600	cmd.exe	92
PID 4600 wrote to memory of 1760	4600	cmd.exe	92

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\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1164
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "urmom" /tr '"C:\Users\Admin\AppData\Roaming\urmom.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:116
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "urmom" /tr '"C:\Users\Admin\AppData\Roaming\urmom.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4380
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8482.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4600
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3956
- - C:\Users\Admin\AppData\Roaming\urmom.exe
    "C:\Users\Admin\AppData\Roaming\urmom.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1760

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\tmp8482.tmp.bat

Filesize
149B

MD5
f68d4d174082c3b689e091e04bbdfc88

SHA1
66c130bab4373b229b96e2e4f81ad6e5a62c8cf3

SHA256
2b2d3b6bc44c7133b2538a060c4122c14d28a11f1dbd981cfa0fe85affa7decf

SHA512
056145a59e52992557c0adaafbb0ffc66e1759122e4ab3230659de055b7743f82105497b050261d5331c9a56e1b29d142da4a056892c06229d703a3aa5dd412f

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

Filesize
63KB

MD5
daacc4b40206c4d5e7260dde1a2f6814

SHA1
7f8baeba108d745c44ee23b4a56c58d5893d2889

SHA256
eb3e3b70ceb124de827b5297c2b8e0b42f84ca8bcd71015a9ce9d7aa5a581a43

SHA512
3afd3cbe4ae7e9e500037a1643ba04430687a602d6a4b7ccb9c12e8b350b29fcb37251b9cb9af4528f92719b6ae4391aea5f58aa505dfd6818b9e0cb036dcf64

Download Submit
memory/1164-0-0x00007FFCFF753000-0x00007FFCFF755000-memory.dmp

Filesize
8KB

Download
memory/1164-1-0x0000000000B80000-0x0000000000B96000-memory.dmp

Filesize
88KB

Download
memory/1164-2-0x00007FFCFF750000-0x00007FFD00212000-memory.dmp

Filesize
10.8MB

Download
memory/1164-3-0x00007FFCFF750000-0x00007FFD00212000-memory.dmp

Filesize
10.8MB

Download
memory/1164-8-0x00007FFCFF750000-0x00007FFD00212000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads