asyncrat | dc1c36296633b9850a0d4298082721fa13d8da3216c4c3b6ed98fa724effdef7

Reason

Machine shutdown

General

Target

Shellbag analyzer.exe
Size

237KB
MD5

08c6f0c11bb897315729fb8ae967dfbd
SHA1

98e123459209064dacec489ef24a5eec1392a78d
SHA256

dc1c36296633b9850a0d4298082721fa13d8da3216c4c3b6ed98fa724effdef7
SHA512

52f931501a4e2db2c2a28b22d271032540eb425a7ea1532731bda694e947360d9452ac186cfdd6b0ed21e21adf54ef7dac80504d257df17300337ae349e4c4b8
SSDEEP

6144:PJLbEwF9kfK8rpClz0KBb6o589GHWHWujiSPbQ:PJMgBuj/Ps

Score

10^/10

asyncrat default evasion rat trojan

Malware Config

Extracted

Family

asyncrat

Botnet

Default

Attributes

delay
1
install
true
install_file
update.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/m5mgzzdQ

aes.plain

Signatures

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

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	update.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	update.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	update.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	update.exe

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0008000000016e0d-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1076	update.exe

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features	update.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com
6	2.tcp.eu.ngrok.io

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
716	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1556	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1368	Shellbag analyzer.exe
1368	Shellbag analyzer.exe
1368	Shellbag analyzer.exe
628	powershell.exe
2556	powershell.exe
1076	update.exe
1076	update.exe
1076	update.exe
1076	update.exe
1076	update.exe
1076	update.exe
1076	update.exe
1076	update.exe
1076	update.exe
1076	update.exe
1076	update.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1368	Shellbag analyzer.exe
Token: SeDebugPrivilege	1368	Shellbag analyzer.exe
Token: SeDebugPrivilege	1076	update.exe
Token: SeDebugPrivilege	1076	update.exe
Token: SeDebugPrivilege	628	powershell.exe
Token: SeDebugPrivilege	2556	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 2064	1368	Shellbag analyzer.exe	31
PID 1368 wrote to memory of 2064	1368	Shellbag analyzer.exe	31
PID 1368 wrote to memory of 2064	1368	Shellbag analyzer.exe	31
PID 1368 wrote to memory of 2220	1368	Shellbag analyzer.exe	32
PID 1368 wrote to memory of 2220	1368	Shellbag analyzer.exe	32
PID 1368 wrote to memory of 2220	1368	Shellbag analyzer.exe	32
PID 2064 wrote to memory of 1556	2064	cmd.exe	35
PID 2064 wrote to memory of 1556	2064	cmd.exe	35
PID 2064 wrote to memory of 1556	2064	cmd.exe	35
PID 2220 wrote to memory of 716	2220	cmd.exe	36
PID 2220 wrote to memory of 716	2220	cmd.exe	36
PID 2220 wrote to memory of 716	2220	cmd.exe	36
PID 2220 wrote to memory of 1076	2220	cmd.exe	37
PID 2220 wrote to memory of 1076	2220	cmd.exe	37
PID 2220 wrote to memory of 1076	2220	cmd.exe	37
PID 1076 wrote to memory of 628	1076	update.exe	39
PID 1076 wrote to memory of 628	1076	update.exe	39
PID 1076 wrote to memory of 628	1076	update.exe	39
PID 1076 wrote to memory of 2556	1076	update.exe	41
PID 1076 wrote to memory of 2556	1076	update.exe	41
PID 1076 wrote to memory of 2556	1076	update.exe	41

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Shellbag analyzer.exe
"C:\Users\Admin\AppData\Local\Temp\Shellbag analyzer.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2064
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1556
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpCED3.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2220
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:716
- - C:\Users\Admin\AppData\Roaming\update.exe
    "C:\Users\Admin\AppData\Roaming\update.exe"
    3⤵
    - Modifies Windows Defender Real-time Protection settings
    - Executes dropped EXE
    - Windows security modification
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1076
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:628
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add - MpPreference - ExclusionExtension ".exe"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2556

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService
1⤵
PID:2124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabF48E.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar91C9.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCED3.tmp.bat

Filesize
150B

MD5
cd3357bba34bd7818cf1837a0c3fa6a3

SHA1
d4842b5da00eb8fb02c63532c2d58d71725ffcfe

SHA256
f4c20651e9d1207395bd2ee72fc667e5249b8eebed44f7562ac14021e51b18d8

SHA512
3c792fb98be80b92cb7294bb3d585d1ac3c8998a3f09b1d427b87f8a07c194797ff62cee8a9d39adb91d6d8bf9b160369698692eca905650e9aaa783a797ab47

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
d6a31a1f8755a0cff35dbecd741e2a06

SHA1
8e7f5184daaa20293507219903f3dca77a48b355

SHA256
35eb51898b624fd86cb6c83df8a9047e96727dfba1a5baf949cf7620858e6a04

SHA512
bb1fa8be951d1eff6a3a18201510841ca6268c3bb55a2f02b9b9264f3f0899775d7cb7570d872549193550e248fd19c87d38b0ed7c552e6f4722ff3a7e702121

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

Filesize
237KB

MD5
08c6f0c11bb897315729fb8ae967dfbd

SHA1
98e123459209064dacec489ef24a5eec1392a78d

SHA256
dc1c36296633b9850a0d4298082721fa13d8da3216c4c3b6ed98fa724effdef7

SHA512
52f931501a4e2db2c2a28b22d271032540eb425a7ea1532731bda694e947360d9452ac186cfdd6b0ed21e21adf54ef7dac80504d257df17300337ae349e4c4b8

Download Submit
memory/628-97-0x0000000001F50000-0x0000000001F58000-memory.dmp

Filesize
32KB

Download
memory/628-96-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/1076-73-0x0000000000B90000-0x0000000000BC4000-memory.dmp

Filesize
208KB

Download
memory/1076-17-0x0000000001020000-0x0000000001062000-memory.dmp

Filesize
264KB

Download
memory/1076-35-0x0000000000740000-0x000000000075C000-memory.dmp

Filesize
112KB

Download
memory/1076-54-0x000000001B5D0000-0x000000001B682000-memory.dmp

Filesize
712KB

Download
memory/1076-105-0x0000000002470000-0x00000000024A2000-memory.dmp

Filesize
200KB

Download
memory/1368-11-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

Filesize
9.9MB

Download
memory/1368-0-0x000007FEF6183000-0x000007FEF6184000-memory.dmp

Filesize
4KB

Download
memory/1368-12-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

Filesize
9.9MB

Download
memory/1368-2-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

Filesize
9.9MB

Download
memory/1368-1-0x0000000000A90000-0x0000000000AD2000-memory.dmp

Filesize
264KB

Download
memory/2556-103-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download
memory/2556-104-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads