asyncrat | 7bc9a0135244519fe11232f68560692c4fb9c1d67d3d102d5747d8b89a8e7dd4

General

Target

Usd 56,335.71$.exe
Size

827KB
MD5

e01c94d8c361c5214b81d40d4606940a
SHA1

484d35f9015112246a38cccbcb29d8a467d061fb
SHA256

7bc9a0135244519fe11232f68560692c4fb9c1d67d3d102d5747d8b89a8e7dd4
SHA512

1b1bf67380357324c8570b104c6dd0b9d8ea2a099b26c4b043077c87a78c518f192a0235f4e9c6557acd2ffb688b3ccbfb552908642d8437a254f6c87bed834b

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

seamoney.duckdns.org:5721

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.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2660-143-0x0000000000400000-0x0000000000416000-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

Processes:

Usd 56,335.71$.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	Usd 56,335.71$.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Usd 56,335.71$.exe

description pid process target process

PID 4604 set thread context of 2660 4604 Usd 56,335.71$.exe Usd 56,335.71$.exe
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

Processes:

schtasks.exe

pid process

4748 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid process

2072 powershell.exe
4292 powershell.exe
2072 powershell.exe
4292 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exeUsd 56,335.71$.exe

description pid process

Token: SeDebugPrivilege 2072 powershell.exe
Token: SeDebugPrivilege 4292 powershell.exe
Token: SeDebugPrivilege 2660 Usd 56,335.71$.exe

description	pid	process	target process
PID 4604 set thread context of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe

pid	process
4748	schtasks.exe

pid	process
2072	powershell.exe
4292	powershell.exe
2072	powershell.exe
4292	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2072	powershell.exe
Token: SeDebugPrivilege	4292	powershell.exe
Token: SeDebugPrivilege	2660	Usd 56,335.71$.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Usd 56,335.71$.exe

description	pid	process	target process
PID 4604 wrote to memory of 2072	4604	Usd 56,335.71$.exe	powershell.exe
PID 4604 wrote to memory of 2072	4604	Usd 56,335.71$.exe	powershell.exe
PID 4604 wrote to memory of 2072	4604	Usd 56,335.71$.exe	powershell.exe
PID 4604 wrote to memory of 4292	4604	Usd 56,335.71$.exe	powershell.exe
PID 4604 wrote to memory of 4292	4604	Usd 56,335.71$.exe	powershell.exe
PID 4604 wrote to memory of 4292	4604	Usd 56,335.71$.exe	powershell.exe
PID 4604 wrote to memory of 4748	4604	Usd 56,335.71$.exe	schtasks.exe
PID 4604 wrote to memory of 4748	4604	Usd 56,335.71$.exe	schtasks.exe
PID 4604 wrote to memory of 4748	4604	Usd 56,335.71$.exe	schtasks.exe
PID 4604 wrote to memory of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe
PID 4604 wrote to memory of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe
PID 4604 wrote to memory of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe
PID 4604 wrote to memory of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe
PID 4604 wrote to memory of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe
PID 4604 wrote to memory of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe
PID 4604 wrote to memory of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe
PID 4604 wrote to memory of 2660	4604	Usd 56,335.71$.exe	Usd 56,335.71$.exe

C:\Users\Admin\AppData\Local\Temp\Usd 56,335.71$.exe
"C:\Users\Admin\AppData\Local\Temp\Usd 56,335.71$.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4604

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Usd 56,335.71$.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2072

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SHhGQnndkQVeW.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4292

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SHhGQnndkQVeW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp28E5.tmp"
2⤵
- Creates scheduled task(s)
PID:4748

C:\Users\Admin\AppData\Local\Temp\Usd 56,335.71$.exe
"C:\Users\Admin\AppData\Local\Temp\Usd 56,335.71$.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2660

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
18KB

MD5
3bfca7288eeb3349aabf7a237ce62a0c

SHA1
5b20d14432318625c108819cab90a31ecd10038a

SHA256
f837e42210442031c1a4df64cdc6b0a503a4e3337531632d2a9c8fab0f7c4a1c

SHA512
2e090d3e7f7ff6154e131c0f941b3b40a0e060734f3d93a20a2309a3dfa33d9f321eddb00fc8a2418d2d28b091af71aa54a0439e86893ade7cbfe221ffb4bb2f

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp28E5.tmp
Filesize
1KB

MD5
5b6e17f28fd70d5ce059ad6046e78ef8

SHA1
b4faffd0b7e5360cf7265a49cbcf49bbfd4fb31b

SHA256
d6239aa0ce274266cab3e9ec22ffc56f38df0b5337a14047512ef1314747908c

SHA512
513a31cc536ce9385d5788bf8b4e235b933301bae5b1772f709bf9c9ea39206285b837e44721c2b83a586a3a5628ec7c8f17c07946b4a0038bd8a2a99cbde310

Download Submit
memory/2072-138-0x0000000004D50000-0x0000000005378000-memory.dmp

Filesize
6.2MB

Download
memory/2072-142-0x0000000005380000-0x00000000053E6000-memory.dmp

Filesize
408KB

Download
memory/2072-155-0x00000000071B0000-0x00000000071CA000-memory.dmp

Filesize
104KB

Download
memory/2072-137-0x0000000000DB0000-0x0000000000DE6000-memory.dmp

Filesize
216KB

Download
memory/2072-154-0x00000000070A0000-0x00000000070AE000-memory.dmp

Filesize
56KB

Download
memory/2072-153-0x00000000070F0000-0x0000000007186000-memory.dmp

Filesize
600KB

Download
memory/2072-156-0x0000000007190000-0x0000000007198000-memory.dmp

Filesize
32KB

Download
memory/2072-134-0x0000000000000000-mapping.dmp

Download
memory/2072-148-0x0000000006100000-0x000000000611E000-memory.dmp

Filesize
120KB

Download
memory/2072-147-0x0000000074D90000-0x0000000074DDC000-memory.dmp

Filesize
304KB

Download
memory/2072-140-0x0000000004BA0000-0x0000000004BC2000-memory.dmp

Filesize
136KB

Download
memory/2072-144-0x00000000054E0000-0x0000000005546000-memory.dmp

Filesize
408KB

Download
memory/2072-145-0x0000000005B60000-0x0000000005B7E000-memory.dmp

Filesize
120KB

Download
memory/2072-146-0x0000000006D10000-0x0000000006D42000-memory.dmp

Filesize
200KB

Download
memory/2660-143-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2660-141-0x0000000000000000-mapping.dmp

Download
memory/4292-151-0x0000000007830000-0x000000000784A000-memory.dmp

Filesize
104KB

Download
memory/4292-150-0x0000000007E80000-0x00000000084FA000-memory.dmp

Filesize
6.5MB

Download
memory/4292-152-0x00000000078A0000-0x00000000078AA000-memory.dmp

Filesize
40KB

Download
memory/4292-149-0x0000000074D90000-0x0000000074DDC000-memory.dmp

Filesize
304KB

Download
memory/4292-135-0x0000000000000000-mapping.dmp

Download
memory/4604-130-0x0000000000B20000-0x0000000000BF4000-memory.dmp

Filesize
848KB

Download
memory/4604-133-0x0000000007830000-0x00000000078CC000-memory.dmp

Filesize
624KB

Download
memory/4604-132-0x0000000005770000-0x0000000005802000-memory.dmp

Filesize
584KB

Download
memory/4604-131-0x0000000005C60000-0x0000000006204000-memory.dmp

Filesize
5.6MB

Download
memory/4748-136-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads