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
behavioral1/files/0x000a000000012281-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2756	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
3044	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
2640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2360	nigga.exe
2360	nigga.exe
2360	nigga.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2360	nigga.exe
Token: SeDebugPrivilege	2756	taskmgr.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2104	2360	nigga.exe	31
PID 2360 wrote to memory of 2104	2360	nigga.exe	31
PID 2360 wrote to memory of 2104	2360	nigga.exe	31
PID 2360 wrote to memory of 2164	2360	nigga.exe	33
PID 2360 wrote to memory of 2164	2360	nigga.exe	33
PID 2360 wrote to memory of 2164	2360	nigga.exe	33
PID 2104 wrote to memory of 2640	2104	cmd.exe	35
PID 2104 wrote to memory of 2640	2104	cmd.exe	35
PID 2104 wrote to memory of 2640	2104	cmd.exe	35
PID 2164 wrote to memory of 3044	2164	cmd.exe	36
PID 2164 wrote to memory of 3044	2164	cmd.exe	36
PID 2164 wrote to memory of 3044	2164	cmd.exe	36
PID 2164 wrote to memory of 2756	2164	cmd.exe	37
PID 2164 wrote to memory of 2756	2164	cmd.exe	37
PID 2164 wrote to memory of 2756	2164	cmd.exe	37

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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2360
- 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:2104
- - 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:2640
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE5CD.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3044
- - C:\Users\Admin\AppData\Roaming\taskmgr.exe
    "C:\Users\Admin\AppData\Roaming\taskmgr.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2756

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE5CD.tmp.bat

Filesize
151B

MD5
0ebf8e9a270658d1d4888672f2012f1c

SHA1
274bced662a7da46bb65a5d4911a9886999a2c69

SHA256
5198341bed633f6a40279341b533bedc125757c10871968c7af3a73acff316b8

SHA512
603f8a3ebbdcdd2a9fa67c2eeafab300a1d7fd11e2709bfeb456aa70d888508adc00989faa51e82276493165ed225f14535961cfa986e27f41a539e987d9649a

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

Filesize
47KB

MD5
3a89fa04e508172538fb62323065d621

SHA1
7a8e7fb80e4919630dc1780916d4f385975942bd

SHA256
9a4798fb51cd9ab16766be2172b208e2bed0fb59787058c25dfa2e26e4918f37

SHA512
554c60aebe07e992f496cfdbee506186089560d468b5e4bb00b16bc7191ee541081f6c9c6c7e79c43cc0c21fe668fbdf113edd0c93bdd8671f67cf2b4cd6a230

Download Submit
memory/2360-0-0x000007FEF5A13000-0x000007FEF5A14000-memory.dmp

Filesize
4KB

Download
memory/2360-1-0x0000000000B80000-0x0000000000B92000-memory.dmp

Filesize
72KB

Download
memory/2360-2-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/2360-12-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-16-0x0000000001320000-0x0000000001332000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads