asyncrat | e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-12-2024 20:20

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General

Target

JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe
Size

300.0MB
MD5

f2fe09806411a018f01bb6a12a80b2b2
SHA1

c08c933ff0bd50a1bded400f086378ddaab5ba4d
SHA256

e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4
SHA512

e435ef3941858b3e3a4d24bfd9778b9c683185472cdd326209dfdbfdc6cfdcea91fa01583985e586db01ef07749c5d1629091117661e7f60db0a9d0e4bd451b8
SSDEEP

3072:bXlvFgvATyfHSt0Vki6jKV1c2jZZIUh7yZGRXBOUEs64BRg40nuFbl3TQ9:b4vj562V/UZ+BUeBRgul29

Score

10^/10

asyncrat venom clients discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT 5.0.5

Botnet

Venom Clients

theyk6836.duckdns.org:9026

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes

delay
1
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

Executes dropped EXE 2 IoCs

pid	Process
3788	redfv.exe
4268	redfv.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3424 set thread context of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3788 set thread context of 5036	3788	redfv.exe	115
PID 4268 set thread context of 3924	4268	redfv.exe	122

System Location Discovery: System Language Discovery 1 TTPs 15 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_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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	redfv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	redfv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
656	schtasks.exe
2776	schtasks.exe
4592	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1848	vbc.exe
Token: SeDebugPrivilege	5036	vbc.exe
Token: SeDebugPrivilege	3924	vbc.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 468	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	101
PID 3424 wrote to memory of 468	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	101
PID 3424 wrote to memory of 468	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	101
PID 3424 wrote to memory of 1700	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	103
PID 3424 wrote to memory of 1700	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	103
PID 3424 wrote to memory of 1700	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	103
PID 468 wrote to memory of 2776	468	cmd.exe	105
PID 468 wrote to memory of 2776	468	cmd.exe	105
PID 468 wrote to memory of 2776	468	cmd.exe	105
PID 3424 wrote to memory of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3424 wrote to memory of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3424 wrote to memory of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3424 wrote to memory of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3424 wrote to memory of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3424 wrote to memory of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3424 wrote to memory of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3424 wrote to memory of 1848	3424	JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe	106
PID 3788 wrote to memory of 3940	3788	redfv.exe	110
PID 3788 wrote to memory of 3940	3788	redfv.exe	110
PID 3788 wrote to memory of 3940	3788	redfv.exe	110
PID 3788 wrote to memory of 4364	3788	redfv.exe	112
PID 3788 wrote to memory of 4364	3788	redfv.exe	112
PID 3788 wrote to memory of 4364	3788	redfv.exe	112
PID 3940 wrote to memory of 4592	3940	cmd.exe	114
PID 3940 wrote to memory of 4592	3940	cmd.exe	114
PID 3940 wrote to memory of 4592	3940	cmd.exe	114
PID 3788 wrote to memory of 5036	3788	redfv.exe	115
PID 3788 wrote to memory of 5036	3788	redfv.exe	115
PID 3788 wrote to memory of 5036	3788	redfv.exe	115
PID 3788 wrote to memory of 5036	3788	redfv.exe	115
PID 3788 wrote to memory of 5036	3788	redfv.exe	115
PID 3788 wrote to memory of 5036	3788	redfv.exe	115
PID 3788 wrote to memory of 5036	3788	redfv.exe	115
PID 3788 wrote to memory of 5036	3788	redfv.exe	115
PID 4268 wrote to memory of 4916	4268	redfv.exe	117
PID 4268 wrote to memory of 4916	4268	redfv.exe	117
PID 4268 wrote to memory of 4916	4268	redfv.exe	117
PID 4268 wrote to memory of 4604	4268	redfv.exe	119
PID 4268 wrote to memory of 4604	4268	redfv.exe	119
PID 4268 wrote to memory of 4604	4268	redfv.exe	119
PID 4916 wrote to memory of 656	4916	cmd.exe	121
PID 4916 wrote to memory of 656	4916	cmd.exe	121
PID 4916 wrote to memory of 656	4916	cmd.exe	121
PID 4268 wrote to memory of 3924	4268	redfv.exe	122
PID 4268 wrote to memory of 3924	4268	redfv.exe	122
PID 4268 wrote to memory of 3924	4268	redfv.exe	122
PID 4268 wrote to memory of 3924	4268	redfv.exe	122
PID 4268 wrote to memory of 3924	4268	redfv.exe	122
PID 4268 wrote to memory of 3924	4268	redfv.exe	122
PID 4268 wrote to memory of 3924	4268	redfv.exe	122
PID 4268 wrote to memory of 3924	4268	redfv.exe	122

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\redfv.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:468
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\redfv.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2776
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e2f693427eb98ff14d97a66007433ddebb3a8311309e2b1f1a95a07c3ec397b4.exe" "C:\Users\Admin\AppData\Roaming\redfv.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1700
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1848

C:\Users\Admin\AppData\Roaming\redfv.exe
C:\Users\Admin\AppData\Roaming\redfv.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3788
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\redfv.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3940
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\redfv.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4592
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Roaming\redfv.exe" "C:\Users\Admin\AppData\Roaming\redfv.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4364
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:5036

C:\Users\Admin\AppData\Roaming\redfv.exe
C:\Users\Admin\AppData\Roaming\redfv.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4268
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\redfv.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4916
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\redfv.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:656
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Roaming\redfv.exe" "C:\Users\Admin\AppData\Roaming\redfv.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4604
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\redfv.exe.log

Filesize
520B

MD5
41c37de2b4598f7759f865817dba5f80

SHA1
884ccf344bc2dd409425dc5ace0fd909a5f8cce4

SHA256
427235491a8da3fc8770ed60d30af731835c94585cd08d4d81fca9f703b283bc

SHA512
a8f3c74916623de100e4cf22e05df9cdf541b1e32443aab0434f35fb9c4a7fa950b997ce589b532e65731ae471a1f152cd5c00ea1df4bd7a6b57eb27c93c54bd

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\vbc.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
memory/1848-12-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/1848-8-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1848-11-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/1848-13-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/1848-16-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3424-3-0x00000000752CE000-0x00000000752CF000-memory.dmp

Filesize
4KB

Download
memory/3424-4-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3424-5-0x0000000005380000-0x0000000005924000-memory.dmp

Filesize
5.6MB

Download
memory/3424-10-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3424-0-0x00000000752CE000-0x00000000752CF000-memory.dmp

Filesize
4KB

Download
memory/3424-2-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3424-1-0x0000000000180000-0x00000000001B0000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads