asyncrat | f0ba0fdaeb248b67341c740cb728b056516768bee672c4df22f38dbad3598bde

General

Target

4029013#.exe
Size

300.0MB
MD5

41308dae88480a4eaf61b36767990bbe
SHA1

a347f3eb607df4c47b9473818866bcad6aef4e96
SHA256

190324c758fe4e21f2254d10bc9871b5e8a2e0f063a0b49f1680b3ee9f8da519
SHA512

ee0812562d7f0f16ea75ccc236ac85c986c47ed52fc75ffb8d1a21d9c62cb90855963d2678dfc01345e97f5435d320d0ba982d82f1d7395d066b843e49479c42
SSDEEP

3072:ZuDu8y65Hc4/+683JZbqaZ75yEzHX7NXjPP8shYd0CwbI+hRx:ZuDu8y65Hc4SrbqXEz37BjzugbIg

Score

10^/10

asyncrat may 17 rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT 5.0.4

Botnet

MAY 17

C2

paris-comrademay17.duckdns.org:25045

Mutex

kjauwydefagvrcku64y

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/2712-139-0x0000000000D70000-0x0000000000D86000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

pmfr.exepmfr.exe

pid process

3056 pmfr.exe
944 pmfr.exe

pid	process
3056	pmfr.exe
944	pmfr.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:

4029013#.exepmfr.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	4029013#.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	pmfr.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 2 IoCs

Processes:

4029013#.exepmfr.exe

description pid process target process

PID 4336 set thread context of 2712 4336 4029013#.exe vbc.exe
PID 3056 set thread context of 5012 3056 pmfr.exe vbc.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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1468 schtasks.exe
2636 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exevbc.exe

description pid process

Token: SeDebugPrivilege 2712 vbc.exe
Token: SeDebugPrivilege 5012 vbc.exe

description	pid	process	target process
PID 4336 set thread context of 2712	4336	4029013#.exe	vbc.exe
PID 3056 set thread context of 5012	3056	pmfr.exe	vbc.exe

pid	process
1468	schtasks.exe
2636	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2712	vbc.exe
Token: SeDebugPrivilege	5012	vbc.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

4029013#.execmd.exepmfr.execmd.exe

description	pid	process	target process
PID 4336 wrote to memory of 4716	4336	4029013#.exe	cmd.exe
PID 4336 wrote to memory of 4716	4336	4029013#.exe	cmd.exe
PID 4336 wrote to memory of 4716	4336	4029013#.exe	cmd.exe
PID 4336 wrote to memory of 1472	4336	4029013#.exe	cmd.exe
PID 4336 wrote to memory of 1472	4336	4029013#.exe	cmd.exe
PID 4336 wrote to memory of 1472	4336	4029013#.exe	cmd.exe
PID 4716 wrote to memory of 1468	4716	cmd.exe	schtasks.exe
PID 4716 wrote to memory of 1468	4716	cmd.exe	schtasks.exe
PID 4716 wrote to memory of 1468	4716	cmd.exe	schtasks.exe
PID 4336 wrote to memory of 2712	4336	4029013#.exe	vbc.exe
PID 4336 wrote to memory of 2712	4336	4029013#.exe	vbc.exe
PID 4336 wrote to memory of 2712	4336	4029013#.exe	vbc.exe
PID 4336 wrote to memory of 2712	4336	4029013#.exe	vbc.exe
PID 4336 wrote to memory of 2712	4336	4029013#.exe	vbc.exe
PID 4336 wrote to memory of 2712	4336	4029013#.exe	vbc.exe
PID 4336 wrote to memory of 2712	4336	4029013#.exe	vbc.exe
PID 4336 wrote to memory of 2712	4336	4029013#.exe	vbc.exe
PID 3056 wrote to memory of 620	3056	pmfr.exe	cmd.exe
PID 3056 wrote to memory of 620	3056	pmfr.exe	cmd.exe
PID 3056 wrote to memory of 620	3056	pmfr.exe	cmd.exe
PID 3056 wrote to memory of 1400	3056	pmfr.exe	cmd.exe
PID 3056 wrote to memory of 1400	3056	pmfr.exe	cmd.exe
PID 3056 wrote to memory of 1400	3056	pmfr.exe	cmd.exe
PID 3056 wrote to memory of 5012	3056	pmfr.exe	vbc.exe
PID 3056 wrote to memory of 5012	3056	pmfr.exe	vbc.exe
PID 3056 wrote to memory of 5012	3056	pmfr.exe	vbc.exe
PID 3056 wrote to memory of 5012	3056	pmfr.exe	vbc.exe
PID 3056 wrote to memory of 5012	3056	pmfr.exe	vbc.exe
PID 3056 wrote to memory of 5012	3056	pmfr.exe	vbc.exe
PID 3056 wrote to memory of 5012	3056	pmfr.exe	vbc.exe
PID 3056 wrote to memory of 5012	3056	pmfr.exe	vbc.exe
PID 620 wrote to memory of 2636	620	cmd.exe	schtasks.exe
PID 620 wrote to memory of 2636	620	cmd.exe	schtasks.exe
PID 620 wrote to memory of 2636	620	cmd.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\4029013#.exe
"C:\Users\Admin\AppData\Local\Temp\4029013#.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4336

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\4029013#.exe" "C:\Users\Admin\AppData\Roaming\pmfr.exe"
2⤵
PID:1472

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\pmfr.exe'" /f
2⤵
- Suspicious use of WriteProcessMemory
PID:4716

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2712

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\pmfr.exe'" /f
1⤵
- Creates scheduled task(s)
PID:1468

C:\Users\Admin\AppData\Roaming\pmfr.exe
C:\Users\Admin\AppData\Roaming\pmfr.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3056

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\pmfr.exe'" /f
2⤵
- Suspicious use of WriteProcessMemory
PID:620

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\pmfr.exe'" /f
3⤵
- Creates scheduled task(s)
PID:2636

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\pmfr.exe" "C:\Users\Admin\AppData\Roaming\pmfr.exe"
2⤵
PID:1400

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:5012

C:\Users\Admin\AppData\Roaming\pmfr.exe
C:\Users\Admin\AppData\Roaming\pmfr.exe
1⤵
- Executes dropped EXE
PID:944

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Scripting

1

T1064

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\pmfr.exe.log
Filesize
520B

MD5
3ca2f9e6a94c24c455ac9431a0bf479b

SHA1
a90309eec691588990609f8f8ad9b935d6f38eb2

SHA256
e84d0c64750ec6333b67eb8aef737bb21cd86c6ef6e520c6537ede13505e125e

SHA512
ba66e42b384f0d865a21d9169169a0b2bd9c62ebee68acc63a191b1a67ca16f4534f955055fc84bbc4a9cd22cec11c3c22a15df7741d99b7dec456e5cabcb0b5

Download Submit
C:\Users\Admin\AppData\Roaming\pmfr.exe
Filesize
300.0MB

MD5
41308dae88480a4eaf61b36767990bbe

SHA1
a347f3eb607df4c47b9473818866bcad6aef4e96

SHA256
190324c758fe4e21f2254d10bc9871b5e8a2e0f063a0b49f1680b3ee9f8da519

SHA512
ee0812562d7f0f16ea75ccc236ac85c986c47ed52fc75ffb8d1a21d9c62cb90855963d2678dfc01345e97f5435d320d0ba982d82f1d7395d066b843e49479c42

Download Submit
C:\Users\Admin\AppData\Roaming\pmfr.exe
Filesize
300.0MB

MD5
41308dae88480a4eaf61b36767990bbe

SHA1
a347f3eb607df4c47b9473818866bcad6aef4e96

SHA256
190324c758fe4e21f2254d10bc9871b5e8a2e0f063a0b49f1680b3ee9f8da519

SHA512
ee0812562d7f0f16ea75ccc236ac85c986c47ed52fc75ffb8d1a21d9c62cb90855963d2678dfc01345e97f5435d320d0ba982d82f1d7395d066b843e49479c42

Download Submit
C:\Users\Admin\AppData\Roaming\pmfr.exe
Filesize
49.4MB

MD5
9a3e23c7c6dbb6e9395e0d2e7256a81e

SHA1
b877b299d820d2800ff5aa9ad9fbd87dc8246e1d

SHA256
268131f5f727160a5ce4f0aaae6f9d63ebb2e96a68d2a34ef610dd62fcabd277

SHA512
d18a3b3f01541e6851a0ec9a23dee8638e97a788e14b7e4227bbf1359741b61ecbd25a9ce5445dc6d0088192f5158fc1496d88c57e7944e02249f189d8ef2b16

Download Submit
memory/620-142-0x0000000000000000-mapping.dmp

Download
memory/1400-143-0x0000000000000000-mapping.dmp

Download
memory/1468-136-0x0000000000000000-mapping.dmp

Download
memory/1472-135-0x0000000000000000-mapping.dmp

Download
memory/2636-145-0x0000000000000000-mapping.dmp

Download
memory/2712-139-0x0000000000D70000-0x0000000000D86000-memory.dmp

Filesize
88KB

Download
memory/2712-138-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2712-137-0x0000000000000000-mapping.dmp

Download
memory/4336-132-0x0000000000500000-0x0000000000532000-memory.dmp

Filesize
200KB

Download
memory/4336-133-0x00000000056F0000-0x0000000005C94000-memory.dmp

Filesize
5.6MB

Download
memory/4716-134-0x0000000000000000-mapping.dmp

Download
memory/5012-144-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads