asyncrat | de7605348e00fa74f915deddaaeb39e85e37d65758e3ab7b3e16b1c4d8934d74

Analysis

max time kernel
37s
max time network
36s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 22:04

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General

Target

RCG_48293729372.rar
Size

410KB
MD5

7ddf39aab483493ce577416732d4bc5b
SHA1

f900811f8d631f85f981eff4d9c976d83d6a296b
SHA256

de7605348e00fa74f915deddaaeb39e85e37d65758e3ab7b3e16b1c4d8934d74
SHA512

976e5691714f2dda72301eaf0897c52a1ec1d06d3af2a5039b3d685f75625aff74c640f9c06d523d5413e1607cbeeeee85c570ec40439624a20826350590d2e8
SSDEEP

6144:F0i/EsJ9XhQI6g5dMa/79m6Oc/hRN0uYDS+G5i8TXQkk0gsHHysDXMpJHxfFz1g/:FrpLhzjY8B4kF+G538kZFSsD8bH3+2A

Score

10^/10

asyncrat zcoopor-llega discovery rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

ZCOOPOR-LLEGA

8529pt.4cloud.click:8529

Mutex

DcRatMutex_qwqdanchun

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 1 IoCs

pid	Process
2936	RCG_48293729372..exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2936 set thread context of 756	2936	RCG_48293729372..exe	95

System Location Discovery: System Language Discovery 1 TTPs 2 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	RCG_48293729372..exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
572	7zFM.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	572	7zFM.exe
Token: 35	572	7zFM.exe
Token: SeSecurityPrivilege	572	7zFM.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
572	7zFM.exe
572	7zFM.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 756	2936	RCG_48293729372..exe	95
PID 2936 wrote to memory of 756	2936	RCG_48293729372..exe	95
PID 2936 wrote to memory of 756	2936	RCG_48293729372..exe	95
PID 2936 wrote to memory of 756	2936	RCG_48293729372..exe	95
PID 2936 wrote to memory of 756	2936	RCG_48293729372..exe	95

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\RCG_48293729372.rar"
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:572

C:\Users\Admin\Desktop\RCG_48293729372..exe
"C:\Users\Admin\Desktop\RCG_48293729372..exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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\Desktop\RCG_48293729372..exe

Filesize
945KB

MD5
9b54e790a4bf5db73e90b08c94eb542a

SHA1
f60455f1338a85bbdc365e4714c184f75e8d383a

SHA256
716c50de230f15003dcac3de58c98751e012d8e39f42423b1de4d69e8fd847ad

SHA512
abe695847b0ef7eb050c01772088174375b62d4f32ae2da08bee840832b07827607da99caa43e0b1b78ecbb9c542a84815550f6bfc7fbd4faa0f6d36348e98c7

Download Submit
memory/756-9-0x0000000001250000-0x0000000001262000-memory.dmp

Filesize
72KB

Download
memory/756-14-0x000000007472E000-0x000000007472F000-memory.dmp

Filesize
4KB

Download
memory/2936-5-0x0000000000408000-0x0000000000420000-memory.dmp

Filesize
96KB

Download
memory/2936-4-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2936-7-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2936-8-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2936-6-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2936-13-0x0000000000408000-0x0000000000420000-memory.dmp

Filesize
96KB

Download
memory/2936-12-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/2936-10-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download