asyncrat | 3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2

General

Target
3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe
Size 417KB
Sample230129-1b3akadd88
SHA256 3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2
MD5 eba584dbe102dea11a92683e90bc5306
SHA1 3ec661ea74194a24a1468ea932c0f658bdf1080c
SHA512 6d1f7874809b1416be371be2dbeefa79e0ecbaf782a2800c4a6b6537ef408d3f1c6d13842937dd055e5941d31d3884348d69d0d25a545e43bcd67e6ecadea4e1
SSDEEP 12288:NomltV+kni0u8wHEnjQHyUjCa9q9Zsdk:pKFHXj/9q9KS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

0.tcp.ngrok.io:6032

Mutex

Asyn♦cMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/3564-142-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5064 set thread context of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
2844	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe
5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe
5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe
5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe
5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe
5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe
5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 5064 wrote to memory of 2844	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	89
PID 5064 wrote to memory of 2844	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	89
PID 5064 wrote to memory of 2844	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	89
PID 5064 wrote to memory of 4288	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	91
PID 5064 wrote to memory of 4288	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	91
PID 5064 wrote to memory of 4288	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	91
PID 5064 wrote to memory of 4344	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	92
PID 5064 wrote to memory of 4344	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	92
PID 5064 wrote to memory of 4344	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	92
PID 5064 wrote to memory of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93
PID 5064 wrote to memory of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93
PID 5064 wrote to memory of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93
PID 5064 wrote to memory of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93
PID 5064 wrote to memory of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93
PID 5064 wrote to memory of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93
PID 5064 wrote to memory of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93
PID 5064 wrote to memory of 3564	5064	3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe	93

C:\Users\Admin\AppData\Local\Temp\3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe
"C:\Users\Admin\AppData\Local\Temp\3a617a7952e9ea3f03052844e4ed2e0262c937d5c62de5e1753ec23dbde3e4a2.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5064
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QxJiZoTYrf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp37C9.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2844
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:4288
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:4344
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:3564

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp37C9.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp37C9.tmp
Size 1KB
SHA256 c55a941221b81f9d3612c8590e7f622bce08b574c83c9474cad7662f3a337bd7
MD5 73cc86a3c13f7009153dca434ef7a04c
SHA1 09cdb394635bfb61ce0971054ded5c4a0825cacd
SHA512 d28ce59d31da3ca0b1c20e1fd59264c092f17f62a67d1c9023d69afe0c1700af299326ab9054ae2057f6a468f6dc7b836cb411b1096de84780347ba9411e6c95
MD5 SHA1 SHA512

Submit Download

memory/3564-142-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/5064-132-0x00000000009D0000-0x0000000000A40000-memory.dmp

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memory/5064-133-0x0000000008040000-0x00000000085E4000-memory.dmp

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memory/5064-134-0x0000000007C70000-0x0000000007D02000-memory.dmp

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memory/5064-135-0x0000000007C50000-0x0000000007C5A000-memory.dmp

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memory/5064-136-0x000000000B540000-0x000000000B5DC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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