asyncrat | 45ba43813271c0c4d377338c381992cd5b0220b80c00cffc0b284f84cc0aee66

General

Target

a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe
Size

426KB
MD5

a504f9dfe6a3554120c7902c56ddf3b2
SHA1

a89ca17e9c1af4912a55bdf49bc0020a3990b408
SHA256

45ba43813271c0c4d377338c381992cd5b0220b80c00cffc0b284f84cc0aee66
SHA512

7557a1bb0edde11ff8d4c68e9c3e11cde7c677e284afcdbd2359dcc9a88692299aa035098663c995948d07518711ac812f7f689a2a559d30da8afed7ce31a08c
SSDEEP

12288:URifysycqld21fNlRU3LmWTvnGeUITYBK7ENId0fGwVTMsMt:UoypcVFWDGXIEcIAILtT

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

primo1.hopto.org:7771

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
15
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2364 set thread context of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33

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	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a504f9dfe6a3554120c7902c56ddf3b2_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
2628	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2628	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	31
PID 2364 wrote to memory of 2628	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	31
PID 2364 wrote to memory of 2628	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	31
PID 2364 wrote to memory of 2628	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	31
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33
PID 2364 wrote to memory of 2604	2364	a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JuAviJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE4E3.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2628
- C:\Users\Admin\AppData\Local\Temp\a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a504f9dfe6a3554120c7902c56ddf3b2_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2604

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE4E3.tmp

Filesize
1KB

MD5
cb5442458863abd5e39cfbe541b2102d

SHA1
65b3a124fe28a44a2cecd3f575abf33ab702d070

SHA256
9a10de959b4c59a71d90cb83b2946b73d20f0240f11cf8fc2ee4486064a84d16

SHA512
4be15976cc445b2e38ccd5e6a811f6fc3f6ddf374c276ac69c37a47e0e621784c836fc491bdcebb299d36d022cb13246747617176eddc82e469d9af641afb382

Download Submit
memory/2364-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/2364-1-0x0000000000970000-0x00000000009E2000-memory.dmp

Filesize
456KB

Download
memory/2364-2-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2364-3-0x0000000000510000-0x000000000051A000-memory.dmp

Filesize
40KB

Download
memory/2364-4-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/2364-5-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2364-6-0x00000000020C0000-0x000000000210A000-memory.dmp

Filesize
296KB

Download
memory/2364-24-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2604-22-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2604-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2604-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2604-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2604-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2604-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2604-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2604-23-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2604-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2604-25-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2604-26-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2604-27-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads