asyncrat | 515e5105f1bda9207f1342220ecaddc6dc04b8aa54149e7cc7ccb38225845d03

General

Target

251523fa1b013d8ca82ab08f177d3ab2.exe
Size

49KB
MD5

251523fa1b013d8ca82ab08f177d3ab2
SHA1

ff641e25cb287db90de6f59786a9a940aa2c5bee
SHA256

515e5105f1bda9207f1342220ecaddc6dc04b8aa54149e7cc7ccb38225845d03
SHA512

63316282cb55b46fbf5b4c95f4ec39cb59fd7b775c4c1dec4db502b8957ff41c31de3b7b7526c8bfe9c79d68070c433d78ce9d51848d51e9e57a3b3639367ef5
SSDEEP

1536:luqY9T9xy2eD3bmXSTLNI98P0wx8vV9XdD4C:luqUT9xy2eD3bmsxI9S8vVhR4C

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

nasihej725.hopto.org:6606

Mutex

Microsoft_6SI8OkPnk

Attributes

delay
3
install
true
install_file
Windows Session Control.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 6 IoCs

rat

resource	yara_rule
behavioral1/memory/1992-54-0x0000000000F10000-0x0000000000F22000-memory.dmp	asyncrat
behavioral1/files/0x000800000001453a-65.dat	asyncrat
behavioral1/files/0x000800000001453a-66.dat	asyncrat
behavioral1/files/0x000800000001453a-67.dat	asyncrat
behavioral1/memory/1340-68-0x0000000001090000-0x00000000010A2000-memory.dmp	asyncrat
behavioral1/memory/1340-69-0x0000000001000000-0x0000000001040000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1340	Windows Session Control.exe

Loads dropped DLL 1 IoCs

pid	Process
576	cmd.exe

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

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
980	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1476	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1992	251523fa1b013d8ca82ab08f177d3ab2.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	251523fa1b013d8ca82ab08f177d3ab2.exe
Token: SeDebugPrivilege	1340	Windows Session Control.exe
Token: SeDebugPrivilege	1340	Windows Session Control.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 1784	1992	251523fa1b013d8ca82ab08f177d3ab2.exe	29
PID 1992 wrote to memory of 1784	1992	251523fa1b013d8ca82ab08f177d3ab2.exe	29
PID 1992 wrote to memory of 1784	1992	251523fa1b013d8ca82ab08f177d3ab2.exe	29
PID 1992 wrote to memory of 1784	1992	251523fa1b013d8ca82ab08f177d3ab2.exe	29
PID 1992 wrote to memory of 576	1992	251523fa1b013d8ca82ab08f177d3ab2.exe	31
PID 1992 wrote to memory of 576	1992	251523fa1b013d8ca82ab08f177d3ab2.exe	31
PID 1992 wrote to memory of 576	1992	251523fa1b013d8ca82ab08f177d3ab2.exe	31
PID 1992 wrote to memory of 576	1992	251523fa1b013d8ca82ab08f177d3ab2.exe	31
PID 1784 wrote to memory of 980	1784	cmd.exe	33
PID 1784 wrote to memory of 980	1784	cmd.exe	33
PID 1784 wrote to memory of 980	1784	cmd.exe	33
PID 1784 wrote to memory of 980	1784	cmd.exe	33
PID 576 wrote to memory of 1476	576	cmd.exe	34
PID 576 wrote to memory of 1476	576	cmd.exe	34
PID 576 wrote to memory of 1476	576	cmd.exe	34
PID 576 wrote to memory of 1476	576	cmd.exe	34
PID 576 wrote to memory of 1340	576	cmd.exe	35
PID 576 wrote to memory of 1340	576	cmd.exe	35
PID 576 wrote to memory of 1340	576	cmd.exe	35
PID 576 wrote to memory of 1340	576	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\251523fa1b013d8ca82ab08f177d3ab2.exe
"C:\Users\Admin\AppData\Local\Temp\251523fa1b013d8ca82ab08f177d3ab2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Session Control" /tr '"C:\Users\Admin\AppData\Roaming\Windows Session Control.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1784
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows Session Control" /tr '"C:\Users\Admin\AppData\Roaming\Windows Session Control.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:980
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp39D6.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:576
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1476
- - C:\Users\Admin\AppData\Roaming\Windows Session Control.exe
    "C:\Users\Admin\AppData\Roaming\Windows Session Control.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1340

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp39D6.tmp.bat

Filesize
167B

MD5
4436564be75f9e5e7c7be2df0c52a1dd

SHA1
37b1d7db16362ab9db4494c9751fc4e56e2d5fa4

SHA256
fa5904eeb65a4311ff25b2fd8b7fea4fbc7c75c2e8586f6c71ea9da0d5f2deb9

SHA512
38d88713d83b875f1ef361633db0751b059c6d7ad0403ce85c62174b53348fff0dc6f29743a6d5b58e713ae8d20240e374e078fb3c956bd4498b36d0b7114fdd

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp39D6.tmp.bat

Filesize
167B

MD5
4436564be75f9e5e7c7be2df0c52a1dd

SHA1
37b1d7db16362ab9db4494c9751fc4e56e2d5fa4

SHA256
fa5904eeb65a4311ff25b2fd8b7fea4fbc7c75c2e8586f6c71ea9da0d5f2deb9

SHA512
38d88713d83b875f1ef361633db0751b059c6d7ad0403ce85c62174b53348fff0dc6f29743a6d5b58e713ae8d20240e374e078fb3c956bd4498b36d0b7114fdd

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Session Control.exe

Filesize
49KB

MD5
251523fa1b013d8ca82ab08f177d3ab2

SHA1
ff641e25cb287db90de6f59786a9a940aa2c5bee

SHA256
515e5105f1bda9207f1342220ecaddc6dc04b8aa54149e7cc7ccb38225845d03

SHA512
63316282cb55b46fbf5b4c95f4ec39cb59fd7b775c4c1dec4db502b8957ff41c31de3b7b7526c8bfe9c79d68070c433d78ce9d51848d51e9e57a3b3639367ef5

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Session Control.exe

Filesize
49KB

MD5
251523fa1b013d8ca82ab08f177d3ab2

SHA1
ff641e25cb287db90de6f59786a9a940aa2c5bee

SHA256
515e5105f1bda9207f1342220ecaddc6dc04b8aa54149e7cc7ccb38225845d03

SHA512
63316282cb55b46fbf5b4c95f4ec39cb59fd7b775c4c1dec4db502b8957ff41c31de3b7b7526c8bfe9c79d68070c433d78ce9d51848d51e9e57a3b3639367ef5

Download Submit
\Users\Admin\AppData\Roaming\Windows Session Control.exe

Filesize
49KB

MD5
251523fa1b013d8ca82ab08f177d3ab2

SHA1
ff641e25cb287db90de6f59786a9a940aa2c5bee

SHA256
515e5105f1bda9207f1342220ecaddc6dc04b8aa54149e7cc7ccb38225845d03

SHA512
63316282cb55b46fbf5b4c95f4ec39cb59fd7b775c4c1dec4db502b8957ff41c31de3b7b7526c8bfe9c79d68070c433d78ce9d51848d51e9e57a3b3639367ef5

Download Submit
memory/1340-68-0x0000000001090000-0x00000000010A2000-memory.dmp

Filesize
72KB

Download
memory/1340-69-0x0000000001000000-0x0000000001040000-memory.dmp

Filesize
256KB

Download
memory/1340-87-0x0000000001000000-0x0000000001040000-memory.dmp

Filesize
256KB

Download
memory/1992-54-0x0000000000F10000-0x0000000000F22000-memory.dmp

Filesize
72KB

Download
memory/1992-55-0x0000000004AB0000-0x0000000004AF0000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads