zharkbot | 3d641dae182ce73851fcfb842ba19ba70f0e5c2b02730fc66948cec688d3949d

General

Target

cyewa.ps1
Size

1.2MB
MD5

8481d9764cda27d097559253f6c5804a
SHA1

813e576e5f5ee54ee74ead61e30b6e3d04a377a3
SHA256

3d641dae182ce73851fcfb842ba19ba70f0e5c2b02730fc66948cec688d3949d
SHA512

3a0b4eb5fd1e01656256308c40e5eca3eb036e33fe686ce22dc6223b2057359db0da020aab8d80c1c68f0b60b17565bf37c60e76224b4fecb5c320c52d9cd282
SSDEEP

12288:l1zabLuoWRUFTNEbBgBLriOlZX9bfWizIq7Q6QXRfThcjLIq20nDcsOSv3UZ5lTC:uV7TOZG

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/4056-14-0x0000000000400000-0x0000000000454000-memory.dmp	zharkcore
behavioral2/memory/4056-17-0x0000000000400000-0x0000000000454000-memory.dmp	zharkcore
behavioral2/memory/4056-21-0x0000000000400000-0x0000000000454000-memory.dmp	zharkcore
behavioral2/memory/4056-18-0x0000000000400000-0x0000000000454000-memory.dmp	zharkcore

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
7	4068	powershell.exe

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

Web Service

T1102

flow	ioc
6	pastebin.com
7	pastebin.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4068 set thread context of 4056	4068	powershell.exe	84

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4068	powershell.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
664	4056	WerFault.exe	84

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 5 IoCs

pid	Process
4068	powershell.exe
4068	powershell.exe
4068	powershell.exe
4068	powershell.exe
4068	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4068	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4068 wrote to memory of 804	4068	powershell.exe	83
PID 4068 wrote to memory of 804	4068	powershell.exe	83
PID 4068 wrote to memory of 804	4068	powershell.exe	83
PID 4068 wrote to memory of 4056	4068	powershell.exe	84
PID 4068 wrote to memory of 4056	4068	powershell.exe	84
PID 4068 wrote to memory of 4056	4068	powershell.exe	84
PID 4068 wrote to memory of 4056	4068	powershell.exe	84
PID 4068 wrote to memory of 4056	4068	powershell.exe	84
PID 4068 wrote to memory of 4056	4068	powershell.exe	84
PID 4068 wrote to memory of 4056	4068	powershell.exe	84
PID 4068 wrote to memory of 4056	4068	powershell.exe	84
PID 4068 wrote to memory of 4056	4068	powershell.exe	84

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\cyewa.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:4068
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:804
- 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:4056
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4056 -s 584
    3⤵
    - Program crash
    PID:664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4056 -ip 4056
1⤵
PID:3568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mtxjdmdc.csv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4056-14-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4056-17-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4056-21-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4056-18-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4068-0-0x00007FFA93AE3000-0x00007FFA93AE5000-memory.dmp

Filesize
8KB

Download
memory/4068-10-0x000002B876110000-0x000002B876132000-memory.dmp

Filesize
136KB

Download
memory/4068-11-0x00007FFA93AE0000-0x00007FFA945A1000-memory.dmp

Filesize
10.8MB

Download
memory/4068-12-0x00007FFA93AE0000-0x00007FFA945A1000-memory.dmp

Filesize
10.8MB

Download
memory/4068-13-0x000002B85DC00000-0x000002B85DC0A000-memory.dmp

Filesize
40KB

Download
memory/4068-19-0x00007FFA93AE0000-0x00007FFA945A1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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