asyncrat | 9a4798fb51cd9ab16766be2172b208e2bed0fb59787058c25dfa2e26e4918f37

General

Target

nigga.exe
Size

47KB
MD5

3a89fa04e508172538fb62323065d621
SHA1

7a8e7fb80e4919630dc1780916d4f385975942bd
SHA256

9a4798fb51cd9ab16766be2172b208e2bed0fb59787058c25dfa2e26e4918f37
SHA512

554c60aebe07e992f496cfdbee506186089560d468b5e4bb00b16bc7191ee541081f6c9c6c7e79c43cc0c21fe668fbdf113edd0c93bdd8671f67cf2b4cd6a230
SSDEEP

768:QAUR8bIL+Cyq+DikcPoAil2YbbgefXzERTvEgK/JXZVc6KN:QPIeLPONbkvnkJXZVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:8848

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
taskmgr.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
behavioral2/files/0x00080000000217a5-10.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-1-5-21-83325578-304917428-1200496059-1000\Control Panel\International\Geo\Nation	nigga.exe

Executes dropped EXE 1 IoCs

pid	Process
2984	taskmgr.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

defense_evasion

pid	Process
4920	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
1440	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe
6132	nigga.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	6132	nigga.exe
Token: SeDebugPrivilege	2984	taskmgr.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 6132 wrote to memory of 2284	6132	nigga.exe	90
PID 6132 wrote to memory of 2284	6132	nigga.exe	90
PID 6132 wrote to memory of 4472	6132	nigga.exe	92
PID 6132 wrote to memory of 4472	6132	nigga.exe	92
PID 2284 wrote to memory of 1440	2284	cmd.exe	94
PID 2284 wrote to memory of 1440	2284	cmd.exe	94
PID 4472 wrote to memory of 4920	4472	cmd.exe	95
PID 4472 wrote to memory of 4920	4472	cmd.exe	95
PID 4472 wrote to memory of 2984	4472	cmd.exe	100
PID 4472 wrote to memory of 2984	4472	cmd.exe	100

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\nigga.exe
"C:\Users\Admin\AppData\Local\Temp\nigga.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:6132
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "taskmgr" /tr '"C:\Users\Admin\AppData\Roaming\taskmgr.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "taskmgr" /tr '"C:\Users\Admin\AppData\Roaming\taskmgr.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1440
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6CD3.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4472
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4920
- - C:\Users\Admin\AppData\Roaming\taskmgr.exe
    "C:\Users\Admin\AppData\Roaming\taskmgr.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2984

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\tmp6CD3.tmp.bat

Filesize
151B

MD5
85408b558d32ebd00db511393115e751

SHA1
4cec0d5a960f0a690e80701376ba90e572b500bb

SHA256
0fea9380ee337fa227d5f6db3e46cd0dcca74b40aef6d9dcbbe478501ace773a

SHA512
a19a4a8374f323fc1ff0808618a135d128c45dd9ebee105724e73a5b99acd37bc80d8aba0966c3b62c81e967cef954d8448857ab2af2658f83b8119886d8d11d

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

Filesize
47KB

MD5
3a89fa04e508172538fb62323065d621

SHA1
7a8e7fb80e4919630dc1780916d4f385975942bd

SHA256
9a4798fb51cd9ab16766be2172b208e2bed0fb59787058c25dfa2e26e4918f37

SHA512
554c60aebe07e992f496cfdbee506186089560d468b5e4bb00b16bc7191ee541081f6c9c6c7e79c43cc0c21fe668fbdf113edd0c93bdd8671f67cf2b4cd6a230

Download Submit
memory/6132-0-0x00007FFFBF973000-0x00007FFFBF975000-memory.dmp

Filesize
8KB

Download
memory/6132-1-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download
memory/6132-2-0x00007FFFBF970000-0x00007FFFC0431000-memory.dmp

Filesize
10.8MB

Download
memory/6132-7-0x00007FFFBF970000-0x00007FFFC0431000-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