zharkbot | d724c5f3cc45e4dc20aa136f945866f8e3d3ff7733c063a2cd73fca1080ec879

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23/09/2024, 18:34

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General

Target
3d641dae182ce73851fcfb842ba19ba70f0e5c2b02730fc66948cec688d3949d.ps1
Size 1.2MB
Sample240923-w7rfqazgrb
SHA256 3d641dae182ce73851fcfb842ba19ba70f0e5c2b02730fc66948cec688d3949d
MD5 8481d9764cda27d097559253f6c5804a
SHA1 813e576e5f5ee54ee74ead61e30b6e3d04a377a3
SHA512 3a0b4eb5fd1e01656256308c40e5eca3eb036e33fe686ce22dc6223b2057359db0da020aab8d80c1c68f0b60b17565bf37c60e76224b4fecb5c320c52d9cd282
SSDEEP 12288:l1zabLuoWRUFTNEbBgBLriOlZX9bfWizIq7Q6QXRfThcjLIq20nDcsOSv3UZ5lTC:uV7TOZG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

zharkbot botnet discovery execution

Malware Config

Signatures

Detects ZharkBot payload 4 IoCs

ZharkBot is a botnet written C++.

resource	yara_rule
behavioral2/memory/4788-14-0x0000000000400000-0x0000000000454000-memory.dmp	zharkcore
behavioral2/memory/4788-18-0x0000000000400000-0x0000000000454000-memory.dmp	zharkcore
behavioral2/memory/4788-21-0x0000000000400000-0x0000000000454000-memory.dmp	zharkcore
behavioral2/memory/4788-19-0x0000000000400000-0x0000000000454000-memory.dmp	zharkcore

ZharkBot
ZharkBot is a botnet written C++.
botnet zharkbot

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	1792	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	pastebin.com
4	pastebin.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1792 set thread context of 4788	1792	powershell.exe	83

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1792	powershell.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2888	4788	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1792	powershell.exe
1792	powershell.exe
1792	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1792	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 4788	1792	powershell.exe	83
PID 1792 wrote to memory of 4788	1792	powershell.exe	83
PID 1792 wrote to memory of 4788	1792	powershell.exe	83
PID 1792 wrote to memory of 4788	1792	powershell.exe	83
PID 1792 wrote to memory of 4788	1792	powershell.exe	83
PID 1792 wrote to memory of 4788	1792	powershell.exe	83
PID 1792 wrote to memory of 4788	1792	powershell.exe	83
PID 1792 wrote to memory of 4788	1792	powershell.exe	83
PID 1792 wrote to memory of 4788	1792	powershell.exe	83

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\3d641dae182ce73851fcfb842ba19ba70f0e5c2b02730fc66948cec688d3949d.ps1
1⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4788
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4788 -s 580
    3⤵
    - Program crash
    PID:2888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4788 -ip 4788
1⤵
PID:336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

__PSScriptPolicyTest_fzso0k1g.z0j.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fzso0k1g.z0j.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1792-0-0x00007FFA4A053000-0x00007FFA4A055000-memory.dmp

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memory/1792-1-0x000001EFF1810000-0x000001EFF1832000-memory.dmp

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memory/1792-11-0x00007FFA4A050000-0x00007FFA4AB11000-memory.dmp

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memory/1792-12-0x00007FFA4A050000-0x00007FFA4AB11000-memory.dmp

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memory/1792-13-0x000001EFF1580000-0x000001EFF158A000-memory.dmp

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memory/1792-17-0x00007FFA4A050000-0x00007FFA4AB11000-memory.dmp

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memory/4788-14-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/4788-18-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/4788-21-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/4788-19-0x0000000000400000-0x0000000000454000-memory.dmp

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