asyncrat | 9e7370614a11179b71851be277e8fd2fde8dfd7f348d830ed9d0a1954ab818f4

General

Target

5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
Size

47KB
MD5

5950a146dc73c30a51f3a6c29b37cf93
SHA1

5293e3447822240bcf9a47092f448ab9689b05bb
SHA256

9e7370614a11179b71851be277e8fd2fde8dfd7f348d830ed9d0a1954ab818f4
SHA512

ed90aa5ecd6c54968306b2129dcfa434b3bc5b0341cd48cfcf617495453b92ae4a88da9b38bb0ee0d9cad1e934f0afa7bc6de5bef82b66eb0789e7d3cacf455e
SSDEEP

768:+uyKFTMIGZ8btAWUumy6mo2q8JXDFDyfZpPItshen76X0bjY1y1l0VQcz5E4CPiB:+uyKFTMtkY2DGc6hen7Lb0ol0hz5x31H

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

20.36.20.111:1604

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
svchost.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
behavioral2/files/0x00080000000234d5-11.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-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4268	svchost.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
3680	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
4372	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
Token: SeDebugPrivilege	4268	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3700 wrote to memory of 2504	3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe	91
PID 3700 wrote to memory of 2504	3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe	91
PID 3700 wrote to memory of 2504	3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe	91
PID 3700 wrote to memory of 1220	3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe	93
PID 3700 wrote to memory of 1220	3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe	93
PID 3700 wrote to memory of 1220	3700	5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe	93
PID 2504 wrote to memory of 4372	2504	cmd.exe	95
PID 2504 wrote to memory of 4372	2504	cmd.exe	95
PID 2504 wrote to memory of 4372	2504	cmd.exe	95
PID 1220 wrote to memory of 3680	1220	cmd.exe	96
PID 1220 wrote to memory of 3680	1220	cmd.exe	96
PID 1220 wrote to memory of 3680	1220	cmd.exe	96
PID 1220 wrote to memory of 4268	1220	cmd.exe	98
PID 1220 wrote to memory of 4268	1220	cmd.exe	98
PID 1220 wrote to memory of 4268	1220	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5950a146dc73c30a51f3a6c29b37cf93_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2504
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4372
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB1AC.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1220
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3680
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4268

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

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB1AC.tmp.bat

Filesize
151B

MD5
9cdc3a0c0434e6447e147975ba052970

SHA1
cf1ef5d929f80ae838a2cc84323505342722fcff

SHA256
1611ba3a6c0dd823733923e1ef297a9cfd7dfb852f410514d1febf1026e866e0

SHA512
d8715014fb07efb07c974f9053e13f9f391edff98b4838c64f3e3774e58517263770a2504074435dc5e50ec1bf9adc3ad612d3ab1bc0215c388537a8e914eb30

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

Filesize
47KB

MD5
5950a146dc73c30a51f3a6c29b37cf93

SHA1
5293e3447822240bcf9a47092f448ab9689b05bb

SHA256
9e7370614a11179b71851be277e8fd2fde8dfd7f348d830ed9d0a1954ab818f4

SHA512
ed90aa5ecd6c54968306b2129dcfa434b3bc5b0341cd48cfcf617495453b92ae4a88da9b38bb0ee0d9cad1e934f0afa7bc6de5bef82b66eb0789e7d3cacf455e

Download Submit
memory/3700-0-0x0000000074E9E000-0x0000000074E9F000-memory.dmp

Filesize
4KB

Download
memory/3700-1-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3700-2-0x0000000074E90000-0x0000000075640000-memory.dmp

Filesize
7.7MB

Download
memory/3700-3-0x0000000004B30000-0x0000000004BCC000-memory.dmp

Filesize
624KB

Download
memory/3700-8-0x0000000074E90000-0x0000000075640000-memory.dmp

Filesize
7.7MB

Download
memory/4268-13-0x0000000074E90000-0x0000000075640000-memory.dmp

Filesize
7.7MB

Download
memory/4268-14-0x0000000074E90000-0x0000000075640000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads