asyncrat | aead3b29e4eb3a2c5499b67eb81a609bd85944a1d7ec6b9557be527a0c566929

General

Target

JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
Size

156KB
MD5

dbf61f566a642cdd0df3fc1d078debb8
SHA1

0294ef20386693a5699bc4e57653f966f0eaf028
SHA256

aead3b29e4eb3a2c5499b67eb81a609bd85944a1d7ec6b9557be527a0c566929
SHA512

4de09065e244d791d8c909a1c6cd689063f8318af2648498f9cf435be19b666aba096f1b2946a75200cacee5a63d705fb545c42a9d6f7a5dbf49d3cd0865467c
SSDEEP

3072:bqOQcs8pmp5W4J44tDlsAU/UwtRUsUUc2fjRs+DVs+A1+HX5wsOZ4T3EMXckbNGV:bqLl2V7H6sA4bEMXc4VLvTGc

Score

10^/10

asyncrat default discovery rat rezer0

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

winx.xcapdatap.capetown:6204

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

resource	yara_rule
behavioral2/memory/4764-10-0x0000000005B40000-0x0000000005B58000-memory.dmp	rezer0

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4764 set thread context of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.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
4744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 4744	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	93
PID 4764 wrote to memory of 4744	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	93
PID 4764 wrote to memory of 4744	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	93
PID 4764 wrote to memory of 1532	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	95
PID 4764 wrote to memory of 1532	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	95
PID 4764 wrote to memory of 1532	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	95
PID 4764 wrote to memory of 4188	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	96
PID 4764 wrote to memory of 4188	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	96
PID 4764 wrote to memory of 4188	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	96
PID 4764 wrote to memory of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97
PID 4764 wrote to memory of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97
PID 4764 wrote to memory of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97
PID 4764 wrote to memory of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97
PID 4764 wrote to memory of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97
PID 4764 wrote to memory of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97
PID 4764 wrote to memory of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97
PID 4764 wrote to memory of 4384	4764	JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe cmd /c %SIGILL% "SIGTERM|DELETE|SIGKILL"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PqVwJtjSm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9A18.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4744
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
  "{path}"
  2⤵
  PID:1532
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
  "{path}"
  2⤵
  PID:4188
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
  "{path}"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4384

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9A18.tmp

Filesize
1KB

MD5
a03b684dc1ebddc58baded147259b222

SHA1
94128815ded8bfc182fd755895587cc1a5e38c76

SHA256
e55b82d7f950df2382df9c7e597f2a11d1f0e4cbc60e63c0c6e24e9dbe25a0ca

SHA512
c66fef132d4de11cdfcef6a7ccb34e719ba03b4a56d329150e73fa0c09f9f13a949d302c2856420474cc8f5c1e4438a6e9343335a0f5947476c47ceafdc38a4c

Download Submit
memory/4384-20-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4384-19-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4384-18-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4384-16-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4384-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4764-4-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4764-6-0x0000000005110000-0x00000000051AC000-memory.dmp

Filesize
624KB

Download
memory/4764-8-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/4764-9-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4764-10-0x0000000005B40000-0x0000000005B58000-memory.dmp

Filesize
96KB

Download
memory/4764-7-0x0000000004E70000-0x0000000004E78000-memory.dmp

Filesize
32KB

Download
memory/4764-5-0x0000000004E80000-0x0000000004E8A000-memory.dmp

Filesize
40KB

Download
memory/4764-0-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/4764-17-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4764-3-0x0000000004EA0000-0x0000000004F32000-memory.dmp

Filesize
584KB

Download
memory/4764-2-0x0000000005450000-0x00000000059F4000-memory.dmp

Filesize
5.6MB

Download
memory/4764-1-0x0000000000490000-0x00000000004BC000-memory.dmp

Filesize
176KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads