asyncrat | 40e3b5ffb836a72a3bfe10e818fa5775536f6f34501945bce1c167c62cec92fd

General

Target

876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe
Size

63KB
MD5

3fdaf7d43edcbf138a3f282199a0a576
SHA1

66f799325fb310bc4e3c810433a53b31256fe6cd
SHA256

876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0
SHA512

7986e68d2dd0f827025790602c1b546ff8d441075947867497cf70d3cb05435d2f2bfde678867e071892ca971bd4cddd7d2c7ba0f86c50004aaa9ce6c066d5b6
SSDEEP

1536:zJs1Tn8I8Q7vIh5teeiMl8GbbXwRKGdZVclN:zJs1Tn8I8Q7e5QeFmGbbXOzY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

193.233.74.21:7777

Mutex

DcRatMutex_qwgsfhgthfhftgd

Attributes

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

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0009000000016ddf-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2500	Defender_procesed.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
2492	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
2320	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe
1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe
1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe
Token: SeDebugPrivilege	2500	Defender_procesed.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 2228	1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe	31
PID 1864 wrote to memory of 2228	1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe	31
PID 1864 wrote to memory of 2228	1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe	31
PID 1864 wrote to memory of 2260	1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe	33
PID 1864 wrote to memory of 2260	1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe	33
PID 1864 wrote to memory of 2260	1864	876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe	33
PID 2228 wrote to memory of 2320	2228	cmd.exe	35
PID 2228 wrote to memory of 2320	2228	cmd.exe	35
PID 2228 wrote to memory of 2320	2228	cmd.exe	35
PID 2260 wrote to memory of 2492	2260	cmd.exe	36
PID 2260 wrote to memory of 2492	2260	cmd.exe	36
PID 2260 wrote to memory of 2492	2260	cmd.exe	36
PID 2260 wrote to memory of 2500	2260	cmd.exe	37
PID 2260 wrote to memory of 2500	2260	cmd.exe	37
PID 2260 wrote to memory of 2500	2260	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\876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe
"C:\Users\Admin\AppData\Local\Temp\876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1864
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Defender_procesed" /tr '"C:\Users\Admin\AppData\Roaming\Defender_procesed.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Defender_procesed" /tr '"C:\Users\Admin\AppData\Roaming\Defender_procesed.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2320
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD308.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2260
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2492
- - C:\Users\Admin\AppData\Roaming\Defender_procesed.exe
    "C:\Users\Admin\AppData\Roaming\Defender_procesed.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2500

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\CabE64C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD308.tmp.bat

Filesize
161B

MD5
97bd8f8433510d4c12b12a52da2ff94b

SHA1
6e7550d469f70b36633be34bcb89a678f9fb683e

SHA256
3e99fcf06e7859bc93827e5af4c06ef24db6708c4886b2d344e3388c400c25a6

SHA512
da1a12eda9f664b26da294b42fef47c329fdfcee654c6b558a7eb4aeee0753e6d4ae4534379596f16e998435bbddf3997153422f01e09ae117ce7a7b57cbfd1d

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

Filesize
63KB

MD5
3fdaf7d43edcbf138a3f282199a0a576

SHA1
66f799325fb310bc4e3c810433a53b31256fe6cd

SHA256
876d061cbbf6c1a4a8cdcfbdbdf5ef74e25476e5da77e502eb586eba8a871ac0

SHA512
7986e68d2dd0f827025790602c1b546ff8d441075947867497cf70d3cb05435d2f2bfde678867e071892ca971bd4cddd7d2c7ba0f86c50004aaa9ce6c066d5b6

Download Submit
memory/1864-0-0x000007FEF66B3000-0x000007FEF66B4000-memory.dmp

Filesize
4KB

Download
memory/1864-1-0x0000000000280000-0x0000000000296000-memory.dmp

Filesize
88KB

Download
memory/1864-2-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Filesize
9.9MB

Download
memory/1864-3-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Filesize
9.9MB

Download
memory/1864-12-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Filesize
9.9MB

Download
memory/2500-17-0x0000000000210000-0x0000000000226000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads