asyncrat | 485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903

General

Target

JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe
Size

72KB
MD5

7177d8bdb3e2e896088768db462da9c7
SHA1

299bf450c044c627294cdaaee36e87dba7d169ee
SHA256

485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903
SHA512

4716cb2d812d784fc65f662c014e4af53d97d0e873422e8035a52308aafcab4d34cc97f954d50cfad1978bf714972422d0dad9cd180a479b46c622faf9e25367
SSDEEP

768:3uypNTAoZjRWUJs9bmo2qL7KjGKG6PIyzjbFgX3iSA0lCsV6WBDZzx:3uypNTAGo2WKYDy3bCXSSDl5VRdzx

Score

10^/10

asyncrat dev discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

DEV

C2

devnodes.duckdns.org:6905

Mutex

DevMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
audiocf.exe
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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000d000000012281-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2852	audiocf.exe

Loads dropped DLL 1 IoCs

pid	Process
2552	cmd.exe

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 6 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_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audiocf.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2212	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
2496	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe
2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe
2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe
Token: SeDebugPrivilege	2852	audiocf.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2064	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe	30
PID 2092 wrote to memory of 2064	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe	30
PID 2092 wrote to memory of 2064	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe	30
PID 2092 wrote to memory of 2064	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe	30
PID 2092 wrote to memory of 2552	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe	32
PID 2092 wrote to memory of 2552	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe	32
PID 2092 wrote to memory of 2552	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe	32
PID 2092 wrote to memory of 2552	2092	JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe	32
PID 2064 wrote to memory of 2496	2064	cmd.exe	34
PID 2064 wrote to memory of 2496	2064	cmd.exe	34
PID 2064 wrote to memory of 2496	2064	cmd.exe	34
PID 2064 wrote to memory of 2496	2064	cmd.exe	34
PID 2552 wrote to memory of 2212	2552	cmd.exe	35
PID 2552 wrote to memory of 2212	2552	cmd.exe	35
PID 2552 wrote to memory of 2212	2552	cmd.exe	35
PID 2552 wrote to memory of 2212	2552	cmd.exe	35
PID 2552 wrote to memory of 2852	2552	cmd.exe	37
PID 2552 wrote to memory of 2852	2552	cmd.exe	37
PID 2552 wrote to memory of 2852	2552	cmd.exe	37
PID 2552 wrote to memory of 2852	2552	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "audiocf" /tr '"C:\Users\Admin\AppData\Roaming\audiocf.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2064
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "audiocf" /tr '"C:\Users\Admin\AppData\Roaming\audiocf.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2496
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC10E.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2552
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2212
- - C:\Users\Admin\AppData\Roaming\audiocf.exe
    "C:\Users\Admin\AppData\Roaming\audiocf.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2852

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC10E.tmp.bat

Filesize
151B

MD5
4a0c62f4b3f8f3be9973ed93647c2887

SHA1
01ef1361feed03b3a7131903900454fdff44bd6d

SHA256
62502ec78ecc0ebd5be6c2208128634f0326e7631e3c98fad37f7ca2cfa25dba

SHA512
80c97beb832b4092de89ebcee526eddc14ddeed022fc6796d9a276e033d24b9c8d2f4c1988cd6019998f0f5843835d42d57bf6da44a6b9ebc6bf75557dca3e5b

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

Filesize
72KB

MD5
7177d8bdb3e2e896088768db462da9c7

SHA1
299bf450c044c627294cdaaee36e87dba7d169ee

SHA256
485a0346917f3f4c31780ceddf38f6c52527620d28fba5bed9524d33c3c1f903

SHA512
4716cb2d812d784fc65f662c014e4af53d97d0e873422e8035a52308aafcab4d34cc97f954d50cfad1978bf714972422d0dad9cd180a479b46c622faf9e25367

Download Submit
memory/2092-0-0x000000007423E000-0x000000007423F000-memory.dmp

Filesize
4KB

Download
memory/2092-1-0x0000000000900000-0x0000000000912000-memory.dmp

Filesize
72KB

Download
memory/2092-2-0x0000000074230000-0x000000007491E000-memory.dmp

Filesize
6.9MB

Download
memory/2092-12-0x0000000074230000-0x000000007491E000-memory.dmp

Filesize
6.9MB

Download
memory/2852-16-0x0000000001110000-0x0000000001122000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads