asyncrat | ea3d22065961b55c82ad89a5003ba6904e04598bfd6987bc847b68196e333c94

General

Target

4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
Size

52KB
MD5

4bc1e15a3b8ccbed4ed88a298d737ee5
SHA1

f1d9f3ba07924492ce6640d7e4de08d36e3485d4
SHA256

ea3d22065961b55c82ad89a5003ba6904e04598bfd6987bc847b68196e333c94
SHA512

5ba27276832f8d57ae58c340a8d4837980c65444f5fab6cb912d23ca50d9ff46767ea9894de0fba12c1ef2485b5ff7e5e97dc803b240261e6d62517493b53b10
SSDEEP

1536:Uui3NTdBR27R515q2r3bSCubG+QSl6qzQgfmd7x:UuidTdBR2V51U2r3FubG+oRgfmhx

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:1212

91.151.94.60:6606

91.151.94.60:7707

91.151.94.60:8808

91.151.94.60:1212

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/0x000b00000002341d-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-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3008	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
2692	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
1972	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
Token: SeDebugPrivilege	3008	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 3592	1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe	86
PID 1484 wrote to memory of 3592	1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe	86
PID 1484 wrote to memory of 3592	1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe	86
PID 1484 wrote to memory of 1040	1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe	88
PID 1484 wrote to memory of 1040	1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe	88
PID 1484 wrote to memory of 1040	1484	4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe	88
PID 1040 wrote to memory of 2692	1040	cmd.exe	90
PID 1040 wrote to memory of 2692	1040	cmd.exe	90
PID 1040 wrote to memory of 2692	1040	cmd.exe	90
PID 3592 wrote to memory of 1972	3592	cmd.exe	91
PID 3592 wrote to memory of 1972	3592	cmd.exe	91
PID 3592 wrote to memory of 1972	3592	cmd.exe	91
PID 1040 wrote to memory of 3008	1040	cmd.exe	92
PID 1040 wrote to memory of 3008	1040	cmd.exe	92
PID 1040 wrote to memory of 3008	1040	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4bc1e15a3b8ccbed4ed88a298d737ee5_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1484
- 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:3592
- - 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:1972
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8D0D.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1040
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2692
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3008

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\tmp8D0D.tmp.bat

Filesize
151B

MD5
bde5b49b04e4e032264cf79283665e45

SHA1
4b61dcaa9465d015bb5691d661c392f9ee9fd007

SHA256
41cae29b0cc97662d3fadc752a4c9b7d0fff825b29cf44ced27b59349a38cee0

SHA512
545d09d3a438ffb7b05b056ebcca0cfd515d96cc73b3457b0336a896bfcfaf740688c847f75ffb6b6b7a0cab3668fc1f05956534cca65c899f9719a69cdf10d1

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

Filesize
52KB

MD5
4bc1e15a3b8ccbed4ed88a298d737ee5

SHA1
f1d9f3ba07924492ce6640d7e4de08d36e3485d4

SHA256
ea3d22065961b55c82ad89a5003ba6904e04598bfd6987bc847b68196e333c94

SHA512
5ba27276832f8d57ae58c340a8d4837980c65444f5fab6cb912d23ca50d9ff46767ea9894de0fba12c1ef2485b5ff7e5e97dc803b240261e6d62517493b53b10

Download Submit
memory/1484-0-0x00000000749EE000-0x00000000749EF000-memory.dmp

Filesize
4KB

Download
memory/1484-1-0x0000000000930000-0x0000000000942000-memory.dmp

Filesize
72KB

Download
memory/1484-2-0x00000000749E0000-0x0000000075190000-memory.dmp

Filesize
7.7MB

Download
memory/1484-3-0x00000000052E0000-0x000000000537C000-memory.dmp

Filesize
624KB

Download
memory/1484-8-0x00000000749E0000-0x0000000075190000-memory.dmp

Filesize
7.7MB

Download
memory/3008-13-0x0000000074930000-0x00000000750E0000-memory.dmp

Filesize
7.7MB

Download
memory/3008-14-0x0000000074930000-0x00000000750E0000-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