asyncrat | fad399ac99b1ef8592fcceff8066146c0afc5be6dde4dfcd2999f565efc2c93a

Resubmissions

26-09-2022 17:41

220926-v9drzacfdr 10

Analysis

max time kernel
131s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2022 17:41

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General

Target

FILEV123.exe
Size

300.0MB
MD5

2a3295c758419a6b8477dad43bd02883
SHA1

7403d49621e3d9ca470afdd7f0eebcdbdf6d0b65
SHA256

9a08dc08a2e7bf39078afd478c3e38718416d6dff45a081cd17daecccca262d5
SHA512

5f2148eb99be6eaea85e4164d6ae72744a7751fec691f382b642da4655c0e463240c981fab9cba5a4d93e25d5549eb9f61dd5ca5267a00c95afdf07d60173d89
SSDEEP

6144:ABMZbzgN9y4e3q99rUcupj+awhEGXBuokWy0L50qnVjAv2U:AKZbcNUFm5upLwhBXBuoppNnVct

Score

10^/10

asyncrat venom clients rat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

venom12345.duckdns.org:4449

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

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

resource	yara_rule
behavioral2/memory/1056-134-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4016	msdtc.exe
4868	msdtc.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3456 set thread context of 1056	3456	FILEV123.exe	84
PID 4016 set thread context of 2572	4016	msdtc.exe	96
PID 4868 set thread context of 2740	4868	msdtc.exe	105

Creates scheduled task(s) 1 TTPs 3 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
3596	schtasks.exe
4120	schtasks.exe
4020	schtasks.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3456	FILEV123.exe
Token: SeDebugPrivilege	1056	RegAsm.exe
Token: SeDebugPrivilege	4016	msdtc.exe
Token: SeDebugPrivilege	2572	RegAsm.exe
Token: SeDebugPrivilege	4868	msdtc.exe
Token: SeDebugPrivilege	2740	RegAsm.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 3456 wrote to memory of 1056	3456	FILEV123.exe	84
PID 3456 wrote to memory of 1056	3456	FILEV123.exe	84
PID 3456 wrote to memory of 1056	3456	FILEV123.exe	84
PID 3456 wrote to memory of 1056	3456	FILEV123.exe	84
PID 3456 wrote to memory of 1056	3456	FILEV123.exe	84
PID 3456 wrote to memory of 1056	3456	FILEV123.exe	84
PID 3456 wrote to memory of 1056	3456	FILEV123.exe	84
PID 3456 wrote to memory of 1056	3456	FILEV123.exe	84
PID 3456 wrote to memory of 1352	3456	FILEV123.exe	85
PID 3456 wrote to memory of 1352	3456	FILEV123.exe	85
PID 3456 wrote to memory of 1352	3456	FILEV123.exe	85
PID 3456 wrote to memory of 4360	3456	FILEV123.exe	87
PID 3456 wrote to memory of 4360	3456	FILEV123.exe	87
PID 3456 wrote to memory of 4360	3456	FILEV123.exe	87
PID 3456 wrote to memory of 3904	3456	FILEV123.exe	89
PID 3456 wrote to memory of 3904	3456	FILEV123.exe	89
PID 3456 wrote to memory of 3904	3456	FILEV123.exe	89
PID 4360 wrote to memory of 4120	4360	cmd.exe	91
PID 4360 wrote to memory of 4120	4360	cmd.exe	91
PID 4360 wrote to memory of 4120	4360	cmd.exe	91
PID 4016 wrote to memory of 2572	4016	msdtc.exe	96
PID 4016 wrote to memory of 2572	4016	msdtc.exe	96
PID 4016 wrote to memory of 2572	4016	msdtc.exe	96
PID 4016 wrote to memory of 2572	4016	msdtc.exe	96
PID 4016 wrote to memory of 2572	4016	msdtc.exe	96
PID 4016 wrote to memory of 2572	4016	msdtc.exe	96
PID 4016 wrote to memory of 2572	4016	msdtc.exe	96
PID 4016 wrote to memory of 2572	4016	msdtc.exe	96
PID 4016 wrote to memory of 2056	4016	msdtc.exe	97
PID 4016 wrote to memory of 2056	4016	msdtc.exe	97
PID 4016 wrote to memory of 2056	4016	msdtc.exe	97
PID 4016 wrote to memory of 1504	4016	msdtc.exe	98
PID 4016 wrote to memory of 1504	4016	msdtc.exe	98
PID 4016 wrote to memory of 1504	4016	msdtc.exe	98
PID 4016 wrote to memory of 372	4016	msdtc.exe	100
PID 4016 wrote to memory of 372	4016	msdtc.exe	100
PID 4016 wrote to memory of 372	4016	msdtc.exe	100
PID 1504 wrote to memory of 4020	1504	cmd.exe	103
PID 1504 wrote to memory of 4020	1504	cmd.exe	103
PID 1504 wrote to memory of 4020	1504	cmd.exe	103
PID 4868 wrote to memory of 2740	4868	msdtc.exe	105
PID 4868 wrote to memory of 2740	4868	msdtc.exe	105
PID 4868 wrote to memory of 2740	4868	msdtc.exe	105
PID 4868 wrote to memory of 2740	4868	msdtc.exe	105
PID 4868 wrote to memory of 2740	4868	msdtc.exe	105
PID 4868 wrote to memory of 2740	4868	msdtc.exe	105
PID 4868 wrote to memory of 2740	4868	msdtc.exe	105
PID 4868 wrote to memory of 2740	4868	msdtc.exe	105
PID 4868 wrote to memory of 1200	4868	msdtc.exe	106
PID 4868 wrote to memory of 1200	4868	msdtc.exe	106
PID 4868 wrote to memory of 1200	4868	msdtc.exe	106
PID 4868 wrote to memory of 5020	4868	msdtc.exe	107
PID 4868 wrote to memory of 5020	4868	msdtc.exe	107
PID 4868 wrote to memory of 5020	4868	msdtc.exe	107
PID 4868 wrote to memory of 5052	4868	msdtc.exe	109
PID 4868 wrote to memory of 5052	4868	msdtc.exe	109
PID 4868 wrote to memory of 5052	4868	msdtc.exe	109
PID 5020 wrote to memory of 3596	5020	cmd.exe	112
PID 5020 wrote to memory of 3596	5020	cmd.exe	112
PID 5020 wrote to memory of 3596	5020	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\FILEV123.exe
"C:\Users\Admin\AppData\Local\Temp\FILEV123.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3456
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1056
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\msdtc"
  2⤵
  PID:1352
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4360
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:4120
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\FILEV123.exe" "C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe"
  2⤵
  PID:3904

C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe
C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4016
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2572
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\msdtc"
  2⤵
  PID:2056
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:4020
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe" "C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe"
  2⤵
  PID:372

C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe
C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2740
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\msdtc"
  2⤵
  PID:1200
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5020
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:3596
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe" "C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe"
  2⤵
  PID:5052

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RegAsm.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\msdtc.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe

Filesize
300.0MB

MD5
2a3295c758419a6b8477dad43bd02883

SHA1
7403d49621e3d9ca470afdd7f0eebcdbdf6d0b65

SHA256
9a08dc08a2e7bf39078afd478c3e38718416d6dff45a081cd17daecccca262d5

SHA512
5f2148eb99be6eaea85e4164d6ae72744a7751fec691f382b642da4655c0e463240c981fab9cba5a4d93e25d5549eb9f61dd5ca5267a00c95afdf07d60173d89

Download Submit
C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe

Filesize
300.0MB

MD5
2a3295c758419a6b8477dad43bd02883

SHA1
7403d49621e3d9ca470afdd7f0eebcdbdf6d0b65

SHA256
9a08dc08a2e7bf39078afd478c3e38718416d6dff45a081cd17daecccca262d5

SHA512
5f2148eb99be6eaea85e4164d6ae72744a7751fec691f382b642da4655c0e463240c981fab9cba5a4d93e25d5549eb9f61dd5ca5267a00c95afdf07d60173d89

Download Submit
C:\Users\Admin\AppData\Roaming\msdtc\msdtc.exe

Filesize
300.0MB

MD5
2a3295c758419a6b8477dad43bd02883

SHA1
7403d49621e3d9ca470afdd7f0eebcdbdf6d0b65

SHA256
9a08dc08a2e7bf39078afd478c3e38718416d6dff45a081cd17daecccca262d5

SHA512
5f2148eb99be6eaea85e4164d6ae72744a7751fec691f382b642da4655c0e463240c981fab9cba5a4d93e25d5549eb9f61dd5ca5267a00c95afdf07d60173d89

Download Submit
memory/372-149-0x0000000000000000-mapping.dmp

Download
memory/1056-139-0x0000000005F50000-0x0000000005FEC000-memory.dmp

Filesize
624KB

Download
memory/1056-140-0x00000000065A0000-0x0000000006B44000-memory.dmp

Filesize
5.6MB

Download
memory/1056-141-0x0000000006060000-0x00000000060C6000-memory.dmp

Filesize
408KB

Download
memory/1056-133-0x0000000000000000-mapping.dmp

Download
memory/1056-134-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1200-156-0x0000000000000000-mapping.dmp

Download
memory/1352-135-0x0000000000000000-mapping.dmp

Download
memory/1504-148-0x0000000000000000-mapping.dmp

Download
memory/2056-147-0x0000000000000000-mapping.dmp

Download
memory/2572-145-0x0000000000000000-mapping.dmp

Download
memory/2740-153-0x0000000000000000-mapping.dmp

Download
memory/3456-132-0x0000000000130000-0x00000000001BC000-memory.dmp

Filesize
560KB

Download
memory/3596-159-0x0000000000000000-mapping.dmp

Download
memory/3904-137-0x0000000000000000-mapping.dmp

Download
memory/4016-144-0x0000000000D90000-0x0000000000E1C000-memory.dmp

Filesize
560KB

Download
memory/4020-150-0x0000000000000000-mapping.dmp

Download
memory/4120-138-0x0000000000000000-mapping.dmp

Download
memory/4360-136-0x0000000000000000-mapping.dmp

Download
memory/5020-157-0x0000000000000000-mapping.dmp

Download
memory/5052-158-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads