asyncrat | ce465307961879325090f1e36cb599bd60fecd44386240d89fbb82c7fdd40799

General

Target

Dmup.exe
Size

345KB
MD5

3812edfc14784ce52c995881e974353d
SHA1

c5846ad5d998be2d9de895b4fdccb17a3afcd5b2
SHA256

ce465307961879325090f1e36cb599bd60fecd44386240d89fbb82c7fdd40799
SHA512

3a832d0a255b883336e873afb4c5ff85e6526ac23a84ec4d6ba810ce6b7083f454d0513c68c9e076d0c40935021d62f7e423ad64410ffdf07a7f873a0a86d2db

Score

10^/10

asyncrat 2 persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

2

C2

212.193.30.54:9524

Mutex

wyQ92!.,=FT72few

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/956-64-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/956-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/956-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/956-67-0x000000000040C6BE-mapping.dmp	asyncrat
behavioral1/memory/956-71-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/956-69-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Dmup.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3422572840-2899912402-917774768-1000\Software\Microsoft\Windows\CurrentVersion\Run\Yhjysc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zgljnmrhu\\Yhjysc.exe\""	Dmup.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Dmup.exe

description	pid	Process	procid_target
PID 1528 set thread context of 956	1528	Dmup.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
564	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

Dmup.exe

pid	Process
1528	Dmup.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Dmup.exe

description	pid	Process
Token: SeDebugPrivilege	1528	Dmup.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Dmup.execmd.exe

description	pid	Process	procid_target
PID 1528 wrote to memory of 756	1528	Dmup.exe	28
PID 1528 wrote to memory of 756	1528	Dmup.exe	28
PID 1528 wrote to memory of 756	1528	Dmup.exe	28
PID 1528 wrote to memory of 756	1528	Dmup.exe	28
PID 756 wrote to memory of 564	756	cmd.exe	30
PID 756 wrote to memory of 564	756	cmd.exe	30
PID 756 wrote to memory of 564	756	cmd.exe	30
PID 756 wrote to memory of 564	756	cmd.exe	30
PID 1528 wrote to memory of 956	1528	Dmup.exe	31
PID 1528 wrote to memory of 956	1528	Dmup.exe	31
PID 1528 wrote to memory of 956	1528	Dmup.exe	31
PID 1528 wrote to memory of 956	1528	Dmup.exe	31
PID 1528 wrote to memory of 956	1528	Dmup.exe	31
PID 1528 wrote to memory of 956	1528	Dmup.exe	31
PID 1528 wrote to memory of 956	1528	Dmup.exe	31
PID 1528 wrote to memory of 956	1528	Dmup.exe	31
PID 1528 wrote to memory of 956	1528	Dmup.exe	31

C:\Users\Admin\AppData\Local\Temp\Dmup.exe
"C:\Users\Admin\AppData\Local\Temp\Dmup.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 19
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:756
- - C:\Windows\SysWOW64\timeout.exe
    timeout 19
    3⤵
    - Delays execution with timeout.exe
    PID:564
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  PID:956

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/564-57-0x0000000000000000-mapping.dmp

Download
memory/756-56-0x0000000000000000-mapping.dmp

Download
memory/956-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/956-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/956-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/956-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/956-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/956-67-0x000000000040C6BE-mapping.dmp

Download
memory/956-71-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/956-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1528-55-0x00000000769C1000-0x00000000769C3000-memory.dmp

Filesize
8KB

Download
memory/1528-58-0x0000000001FB0000-0x0000000001FFA000-memory.dmp

Filesize
296KB

Download
memory/1528-59-0x00000000041C0000-0x00000000041F0000-memory.dmp

Filesize
192KB

Download
memory/1528-60-0x0000000004A20000-0x0000000004A6C000-memory.dmp

Filesize
304KB

Download
memory/1528-54-0x0000000000310000-0x000000000036C000-memory.dmp

Filesize
368KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads