asyncrat | cbb4a905efad9fff8c83e66f166d31875e3c87afa431210f9da5b3b0ed0aeaba

General

Target

d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe
Size

583KB
MD5

d9e83a990c7bd74e6e595db61ef7722e
SHA1

5adf69d2566baa09176cbed0ea5b251f4364ade8
SHA256

cbb4a905efad9fff8c83e66f166d31875e3c87afa431210f9da5b3b0ed0aeaba
SHA512

1032fe4f94e556add89d009fac6294df79976d769a65fd93f5815b8bb62bb02ef4df93976fae08b86e11a88e4f037f0acde2df8bd1e374ae6ea7fb88f5d2d5cb
SSDEEP

12288:FrAe2iNeHK7zYjuVnWyBk5jQbNWsF3SGOL8B/wn:FrX1bJRsxGbon

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:2245

127.0.0.1:2256

fresh01.ddns.net:2245

fresh01.ddns.net:2256

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

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4932 set thread context of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93

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	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.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
3872	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 3872	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	91
PID 4932 wrote to memory of 3872	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	91
PID 4932 wrote to memory of 3872	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	91
PID 4932 wrote to memory of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93
PID 4932 wrote to memory of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93
PID 4932 wrote to memory of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93
PID 4932 wrote to memory of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93
PID 4932 wrote to memory of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93
PID 4932 wrote to memory of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93
PID 4932 wrote to memory of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93
PID 4932 wrote to memory of 1644	4932	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	93

C:\Users\Admin\AppData\Local\Temp\d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe"
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:4932
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RDSfONspQLLpB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6BA6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3872
- C:\Users\Admin\AppData\Local\Temp\d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1644

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\tmp6BA6.tmp

Filesize
1KB

MD5
718d2f88163d712d7c396f8e5fccbea9

SHA1
ff2c924eb26699ef0ff8d0da374b280386781c69

SHA256
6f2d215e49e3a52138eaf034d9f26d56e5f880051dec92ff1fdff908fbdd9061

SHA512
788bbcb110f19950be1063cf775977e74bbf91fba0a69798e8caba2248ae02bdfdc7af9ea8121ac8e92acc9c4c1bfad4fe4c39c29f582b4e76ee2b06726bed43

Download Submit
memory/1644-24-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-23-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-22-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-20-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4932-5-0x0000000005490000-0x000000000549A000-memory.dmp

Filesize
40KB

Download
memory/4932-6-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/4932-8-0x00000000084B0000-0x00000000084C6000-memory.dmp

Filesize
88KB

Download
memory/4932-9-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/4932-10-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/4932-11-0x00000000088E0000-0x0000000008962000-memory.dmp

Filesize
520KB

Download
memory/4932-12-0x000000000B080000-0x000000000B092000-memory.dmp

Filesize
72KB

Download
memory/4932-7-0x00000000057A0000-0x00000000057F6000-memory.dmp

Filesize
344KB

Download
memory/4932-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/4932-4-0x0000000005550000-0x00000000055E2000-memory.dmp

Filesize
584KB

Download
memory/4932-21-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/4932-3-0x0000000005B00000-0x00000000060A4000-memory.dmp

Filesize
5.6MB

Download
memory/4932-2-0x00000000054B0000-0x000000000554C000-memory.dmp

Filesize
624KB

Download
memory/4932-1-0x0000000000BA0000-0x0000000000C38000-memory.dmp

Filesize
608KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads