asyncrat | 6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618

General

Target

6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe
Size

73KB
MD5

75e679528300f0eec2aab97faf87a0b1
SHA1

5f5e310edf9b08693a31003a91071b5b4b7bfd39
SHA256

6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618
SHA512

7b051d593aa6c20ec50018c56f834388345f025c2e5257cd0c887aeb15f6e6302e57c91b3009ae65a5456aef3c338a5603bda45240eaa325e7636475fe01d935
SSDEEP

768:btF3S1PK+iPDVwir9JSIEZvkYIuu7tkA1+BSrv7mqb2nyHpwH1oQWM4Vp8GX90P7:BkKhJ2ZsYCnn/bb5weMrGX90+t3VclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
3
install
true
install_file
MicrosoftEdgeUpdate.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/ZnhxAV6a

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/0x0009000000016d4f-16.dat	family_asyncrat

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

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
1620	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
2476	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe
1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe
1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 2328	1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe	30
PID 1908 wrote to memory of 2328	1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe	30
PID 1908 wrote to memory of 2328	1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe	30
PID 1908 wrote to memory of 2300	1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe	32
PID 1908 wrote to memory of 2300	1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe	32
PID 1908 wrote to memory of 2300	1908	6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe	32
PID 2328 wrote to memory of 2476	2328	cmd.exe	34
PID 2328 wrote to memory of 2476	2328	cmd.exe	34
PID 2328 wrote to memory of 2476	2328	cmd.exe	34
PID 2300 wrote to memory of 1620	2300	cmd.exe	35
PID 2300 wrote to memory of 1620	2300	cmd.exe	35
PID 2300 wrote to memory of 1620	2300	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe
"C:\Users\Admin\AppData\Local\Temp\6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftEdgeUpdate" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftEdgeUpdate.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2328
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftEdgeUpdate" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftEdgeUpdate.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2476
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC63C.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2300
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1620
- - C:\Users\Admin\AppData\Roaming\MicrosoftEdgeUpdate.exe
    "C:\Users\Admin\AppData\Roaming\MicrosoftEdgeUpdate.exe"
    3⤵
    PID:2856

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC63C.tmp.bat

Filesize
163B

MD5
404ddeb551acc17ab3f8f4110282bcee

SHA1
5005e43e03b7595427c55c5eab2904ad7021ef41

SHA256
f7f440138391955281723d4c6f7538364c9e671ea19041e67c7990b39a412ead

SHA512
3dab029c0e1a4a99bf99be9aa8a3246886a4929484974566b7ba8f2d03a1170b66420ed72247d3047170f361027495130afecef5e4446387df9ee9b1706c0aa4

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

Filesize
73KB

MD5
75e679528300f0eec2aab97faf87a0b1

SHA1
5f5e310edf9b08693a31003a91071b5b4b7bfd39

SHA256
6cdd270a2bad95c8a063a9fe876f6c454f2b5219164c476e2bf94350ab050618

SHA512
7b051d593aa6c20ec50018c56f834388345f025c2e5257cd0c887aeb15f6e6302e57c91b3009ae65a5456aef3c338a5603bda45240eaa325e7636475fe01d935

Download Submit
memory/1908-0-0x000007FEF5BD3000-0x000007FEF5BD4000-memory.dmp

Filesize
4KB

Download
memory/1908-1-0x0000000001390000-0x00000000013A8000-memory.dmp

Filesize
96KB

Download
memory/1908-2-0x000007FEF5BD0000-0x000007FEF65BC000-memory.dmp

Filesize
9.9MB

Download
memory/1908-12-0x000007FEF5BD0000-0x000007FEF65BC000-memory.dmp

Filesize
9.9MB

Download
memory/1908-11-0x000007FEF5BD0000-0x000007FEF65BC000-memory.dmp

Filesize
9.9MB

Download
memory/2856-17-0x0000000001330000-0x0000000001348000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads