asyncrat | 2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-08-2022 03:50

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General

Target

2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
Size

2.2MB
MD5

b5f1a37cbd6c8a4690942fd254270ce1
SHA1

e31e9c0d978a340445572bbb4b07fd2d5f9cb6ec
SHA256

2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e
SHA512

6a7a39a9511d3bbe42a90d0a8c6a7e97d6427b8d68fc303b1b6dc2c3737ba7c875ccf44683ca792aab92daba43ffea32da93066acb64005f2e7532ce011b6996

Score

10^/10

asyncrat default persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

76.8.53.133:62520

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
dwwm.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 5 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Kxtwaidanpqpiuhprlehfsshclientip.exe	asyncrat
C:\Users\Admin\AppData\Local\Temp\Kxtwaidanpqpiuhprlehfsshclientip.exe	asyncrat
behavioral3/memory/3424-145-0x0000000000C60000-0x0000000000C72000-memory.dmp	asyncrat
C:\Users\Admin\AppData\Roaming\dwwm.exe	asyncrat
C:\Users\Admin\AppData\Roaming\dwwm.exe	asyncrat

Executes dropped EXE 2 IoCs

Processes:

Kxtwaidanpqpiuhprlehfsshclientip.exedwwm.exe

pid process

3424 Kxtwaidanpqpiuhprlehfsshclientip.exe
1280 dwwm.exe

pid	process
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
1280	dwwm.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exeKxtwaidanpqpiuhprlehfsshclientip.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	Kxtwaidanpqpiuhprlehfsshclientip.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exeInstallUtil.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Keahz = "\"C:\\Users\\Admin\\AppData\\Roaming\\Tbsztbbv\\Keahz.exe\""	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DBqQu = "C:\\Users\\Admin\\AppData\\Roaming\\DBqQu\\DBqQu.exe"	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe

description	pid	process	target process
PID 1436 set thread context of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.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

1472 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

320 timeout.exe

pid	process
1472	schtasks.exe

pid	process
320	timeout.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

Processes:

powershell.exe2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exeInstallUtil.exeKxtwaidanpqpiuhprlehfsshclientip.exe

pid	process
4072	powershell.exe
4072	powershell.exe
1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
2324	InstallUtil.exe
2324	InstallUtil.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
3424	Kxtwaidanpqpiuhprlehfsshclientip.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exepowershell.exeInstallUtil.exeKxtwaidanpqpiuhprlehfsshclientip.exedwwm.exe

description	pid	process
Token: SeDebugPrivilege	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
Token: SeDebugPrivilege	4072	powershell.exe
Token: SeDebugPrivilege	2324	InstallUtil.exe
Token: SeDebugPrivilege	3424	Kxtwaidanpqpiuhprlehfsshclientip.exe
Token: SeDebugPrivilege	1280	dwwm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid process

2324 InstallUtil.exe

pid	process
2324	InstallUtil.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exeKxtwaidanpqpiuhprlehfsshclientip.execmd.execmd.exe

description	pid	process	target process
PID 1436 wrote to memory of 4072	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	powershell.exe
PID 1436 wrote to memory of 4072	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	powershell.exe
PID 1436 wrote to memory of 4072	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	powershell.exe
PID 1436 wrote to memory of 3424	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	Kxtwaidanpqpiuhprlehfsshclientip.exe
PID 1436 wrote to memory of 3424	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	Kxtwaidanpqpiuhprlehfsshclientip.exe
PID 1436 wrote to memory of 3424	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	Kxtwaidanpqpiuhprlehfsshclientip.exe
PID 1436 wrote to memory of 1336	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 1336	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 1336	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 1436 wrote to memory of 2324	1436	2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe	InstallUtil.exe
PID 3424 wrote to memory of 1520	3424	Kxtwaidanpqpiuhprlehfsshclientip.exe	cmd.exe
PID 3424 wrote to memory of 1520	3424	Kxtwaidanpqpiuhprlehfsshclientip.exe	cmd.exe
PID 3424 wrote to memory of 1520	3424	Kxtwaidanpqpiuhprlehfsshclientip.exe	cmd.exe
PID 3424 wrote to memory of 1580	3424	Kxtwaidanpqpiuhprlehfsshclientip.exe	cmd.exe
PID 3424 wrote to memory of 1580	3424	Kxtwaidanpqpiuhprlehfsshclientip.exe	cmd.exe
PID 3424 wrote to memory of 1580	3424	Kxtwaidanpqpiuhprlehfsshclientip.exe	cmd.exe
PID 1580 wrote to memory of 320	1580	cmd.exe	timeout.exe
PID 1580 wrote to memory of 320	1580	cmd.exe	timeout.exe
PID 1580 wrote to memory of 320	1580	cmd.exe	timeout.exe
PID 1520 wrote to memory of 1472	1520	cmd.exe	schtasks.exe
PID 1520 wrote to memory of 1472	1520	cmd.exe	schtasks.exe
PID 1520 wrote to memory of 1472	1520	cmd.exe	schtasks.exe
PID 1580 wrote to memory of 1280	1580	cmd.exe	dwwm.exe
PID 1580 wrote to memory of 1280	1580	cmd.exe	dwwm.exe
PID 1580 wrote to memory of 1280	1580	cmd.exe	dwwm.exe

C:\Users\Admin\AppData\Local\Temp\2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe
"C:\Users\Admin\AppData\Local\Temp\2bbea59df3d821b3be653542b95a261bec805a7dacbdd117beaef7b3c8586a7e.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1436

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4072

C:\Users\Admin\AppData\Local\Temp\Kxtwaidanpqpiuhprlehfsshclientip.exe
"C:\Users\Admin\AppData\Local\Temp\Kxtwaidanpqpiuhprlehfsshclientip.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3424

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "dwwm" /tr '"C:\Users\Admin\AppData\Roaming\dwwm.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1520

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "dwwm" /tr '"C:\Users\Admin\AppData\Roaming\dwwm.exe"'
4⤵
- Creates scheduled task(s)
PID:1472

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2EA1.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:1580

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:320

C:\Users\Admin\AppData\Roaming\dwwm.exe
"C:\Users\Admin\AppData\Roaming\dwwm.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1280

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
PID:1336

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2324

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Kxtwaidanpqpiuhprlehfsshclientip.exe
Filesize
45KB

MD5
09483dc605208384bf243df58a997193

SHA1
a0498cb4b34e5e0236304fc406c4e82e767ceb0e

SHA256
fcc37d35f86fb13150c8b3277382a76bfab0e22d7159f6addf86d302def260df

SHA512
767742ef725ae1e20556918a19c1d0607542b3a62a4ec5eb1859e20b6a5986185c4501c6f234500cad177330f6facb2ff351ea612c29d279c3c4d40fbf435b28

Download Submit
C:\Users\Admin\AppData\Local\Temp\Kxtwaidanpqpiuhprlehfsshclientip.exe
Filesize
45KB

MD5
09483dc605208384bf243df58a997193

SHA1
a0498cb4b34e5e0236304fc406c4e82e767ceb0e

SHA256
fcc37d35f86fb13150c8b3277382a76bfab0e22d7159f6addf86d302def260df

SHA512
767742ef725ae1e20556918a19c1d0607542b3a62a4ec5eb1859e20b6a5986185c4501c6f234500cad177330f6facb2ff351ea612c29d279c3c4d40fbf435b28

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2EA1.tmp.bat
Filesize
148B

MD5
5702e93697aab7388274b1049cf2a70a

SHA1
07a254d87f2e86ce19dff35c59058abf76235d05

SHA256
36b320d3bae7b446ef76d5fe022d2c84cd802fbbde64e34fcb4353a81cd26a71

SHA512
96bac39d2273dc28051e962664d2812ec69221d2b9fc8f70952320aad0c440bcb09174e8f7324651d90d9835349ece054c6cdcbd65dd352751517adab5122ca3

Download Submit
C:\Users\Admin\AppData\Roaming\dwwm.exe
Filesize
45KB

MD5
09483dc605208384bf243df58a997193

SHA1
a0498cb4b34e5e0236304fc406c4e82e767ceb0e

SHA256
fcc37d35f86fb13150c8b3277382a76bfab0e22d7159f6addf86d302def260df

SHA512
767742ef725ae1e20556918a19c1d0607542b3a62a4ec5eb1859e20b6a5986185c4501c6f234500cad177330f6facb2ff351ea612c29d279c3c4d40fbf435b28

Download Submit
C:\Users\Admin\AppData\Roaming\dwwm.exe
Filesize
45KB

MD5
09483dc605208384bf243df58a997193

SHA1
a0498cb4b34e5e0236304fc406c4e82e767ceb0e

SHA256
fcc37d35f86fb13150c8b3277382a76bfab0e22d7159f6addf86d302def260df

SHA512
767742ef725ae1e20556918a19c1d0607542b3a62a4ec5eb1859e20b6a5986185c4501c6f234500cad177330f6facb2ff351ea612c29d279c3c4d40fbf435b28

Download Submit
memory/320-155-0x0000000000000000-mapping.dmp

Download
memory/1280-157-0x0000000000000000-mapping.dmp

Download
memory/1336-146-0x0000000000000000-mapping.dmp

Download
memory/1436-133-0x0000000005A90000-0x0000000005AB2000-memory.dmp

Filesize
136KB

Download
memory/1436-132-0x0000000000C40000-0x0000000000E74000-memory.dmp

Filesize
2.2MB

Download
memory/1472-156-0x0000000000000000-mapping.dmp

Download
memory/1520-152-0x0000000000000000-mapping.dmp

Download
memory/1580-153-0x0000000000000000-mapping.dmp

Download
memory/2324-147-0x0000000000000000-mapping.dmp

Download
memory/2324-148-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2324-149-0x0000000005390000-0x0000000005934000-memory.dmp

Filesize
5.6MB

Download
memory/2324-150-0x0000000004F20000-0x0000000004FB2000-memory.dmp

Filesize
584KB

Download
memory/2324-160-0x0000000005FA0000-0x0000000005FAA000-memory.dmp

Filesize
40KB

Download
memory/3424-145-0x0000000000C60000-0x0000000000C72000-memory.dmp

Filesize
72KB

Download
memory/3424-142-0x0000000000000000-mapping.dmp

Download
memory/3424-151-0x0000000005620000-0x00000000056BC000-memory.dmp

Filesize
624KB

Download
memory/4072-140-0x0000000007D20000-0x000000000839A000-memory.dmp

Filesize
6.5MB

Download
memory/4072-139-0x00000000066D0000-0x00000000066EE000-memory.dmp

Filesize
120KB

Download
memory/4072-138-0x0000000005810000-0x0000000005876000-memory.dmp

Filesize
408KB

Download
memory/4072-137-0x00000000057A0000-0x0000000005806000-memory.dmp

Filesize
408KB

Download
memory/4072-136-0x00000000058B0000-0x0000000005ED8000-memory.dmp

Filesize
6.2MB

Download
memory/4072-135-0x0000000003120000-0x0000000003156000-memory.dmp

Filesize
216KB

Download
memory/4072-134-0x0000000000000000-mapping.dmp

Download
memory/4072-141-0x0000000006BC0000-0x0000000006BDA000-memory.dmp

Filesize
104KB

Download