zharkbot | 4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2024 06:33

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General

Target

b45668e08c03024f2432ff332c319131.exe
Size

3.4MB
MD5

b45668e08c03024f2432ff332c319131
SHA1

4bef9109eaeace4107c47858eef2d9d3487e45f0
SHA256

4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe
SHA512

538c8471fc0313e68885d4d09140ec3e3374af3464af626195b6387a67b9bae9c3c9fd369d9dc7965decc182d13e8bbf95b4cf96b5ffc78af5d7904d59325bbc
SSDEEP

98304:MHKnK7qkC+8TMGHgWnvLBQ0YXpS3KZFc6LUARABDgAj:MqKYx9zu0YpSaZFcJA6BDga

Score

10^/10

zharkbot botnet discovery evasion themida trojan

Malware Config

Signatures

Detects ZharkBot payload 4 IoCs

ZharkBot is a botnet written C++.

resource	yara_rule
behavioral2/memory/3124-27-0x0000000000400000-0x0000000000455000-memory.dmp	zharkcore
behavioral2/memory/3124-28-0x0000000000400000-0x0000000000455000-memory.dmp	zharkcore
behavioral2/memory/3124-29-0x0000000000400000-0x0000000000455000-memory.dmp	zharkcore
behavioral2/memory/3124-31-0x0000000000400000-0x0000000000455000-memory.dmp	zharkcore

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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b45668e08c03024f2432ff332c319131.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b45668e08c03024f2432ff332c319131.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b45668e08c03024f2432ff332c319131.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ucloud.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ucloud.exe	Powershell.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/1976-12-0x0000000000BF0000-0x000000000146E000-memory.dmp	themida
behavioral2/memory/1976-39-0x0000000000BF0000-0x000000000146E000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b45668e08c03024f2432ff332c319131.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1976	b45668e08c03024f2432ff332c319131.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1452	3124	WerFault.exe	99

System Location Discovery: System Language Discovery 1 TTPs 3 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	b45668e08c03024f2432ff332c319131.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1976	b45668e08c03024f2432ff332c319131.exe
1976	b45668e08c03024f2432ff332c319131.exe
1228	Powershell.exe
1228	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	Powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 3124	1976	b45668e08c03024f2432ff332c319131.exe	99
PID 1976 wrote to memory of 1228	1976	b45668e08c03024f2432ff332c319131.exe	106
PID 1976 wrote to memory of 1228	1976	b45668e08c03024f2432ff332c319131.exe	106
PID 1976 wrote to memory of 1228	1976	b45668e08c03024f2432ff332c319131.exe	106

C:\Users\Admin\AppData\Local\Temp\b45668e08c03024f2432ff332c319131.exe
"C:\Users\Admin\AppData\Local\Temp\b45668e08c03024f2432ff332c319131.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1976
- 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:3124
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3124 -s 580
    3⤵
    - Program crash
    PID:1452
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\b45668e08c03024f2432ff332c319131.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ucloud.exe'
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3124 -ip 3124
1⤵
PID:1552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_plfvpyqc.zft.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1228-56-0x0000000006940000-0x000000000695E000-memory.dmp

Filesize
120KB

Download
memory/1228-64-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1228-59-0x0000000006E20000-0x0000000006E3A000-memory.dmp

Filesize
104KB

Download
memory/1228-58-0x0000000006EA0000-0x0000000006F36000-memory.dmp

Filesize
600KB

Download
memory/1228-57-0x0000000006960000-0x00000000069AC000-memory.dmp

Filesize
304KB

Download
memory/1228-37-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1228-51-0x0000000006310000-0x0000000006664000-memory.dmp

Filesize
3.3MB

Download
memory/1228-60-0x0000000006E70000-0x0000000006E92000-memory.dmp

Filesize
136KB

Download
memory/1228-44-0x0000000006230000-0x0000000006296000-memory.dmp

Filesize
408KB

Download
memory/1228-45-0x00000000062A0000-0x0000000006306000-memory.dmp

Filesize
408KB

Download
memory/1228-43-0x0000000005910000-0x0000000005932000-memory.dmp

Filesize
136KB

Download
memory/1228-42-0x0000000005A90000-0x00000000060B8000-memory.dmp

Filesize
6.2MB

Download
memory/1228-40-0x0000000002F90000-0x0000000002FC6000-memory.dmp

Filesize
216KB

Download
memory/1228-38-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-13-0x0000000005920000-0x00000000059BC000-memory.dmp

Filesize
624KB

Download
memory/1976-11-0x0000000000BF0000-0x000000000146E000-memory.dmp

Filesize
8.5MB

Download
memory/1976-21-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-22-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-25-0x0000000005CE0000-0x0000000005E20000-memory.dmp

Filesize
1.2MB

Download
memory/1976-26-0x0000000005900000-0x0000000005922000-memory.dmp

Filesize
136KB

Download
memory/1976-1-0x0000000075A50000-0x0000000075A51000-memory.dmp

Filesize
4KB

Download
memory/1976-3-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-4-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-2-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-18-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-39-0x0000000000BF0000-0x000000000146E000-memory.dmp

Filesize
8.5MB

Download
memory/1976-17-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-15-0x0000000075A50000-0x0000000075A51000-memory.dmp

Filesize
4KB

Download
memory/1976-41-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-16-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-14-0x0000000005F70000-0x0000000006514000-memory.dmp

Filesize
5.6MB

Download
memory/1976-0-0x0000000000BF0000-0x000000000146E000-memory.dmp

Filesize
8.5MB

Download
memory/1976-12-0x0000000000BF0000-0x000000000146E000-memory.dmp

Filesize
8.5MB

Download
memory/1976-20-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-7-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-6-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/1976-5-0x0000000075A30000-0x0000000075B20000-memory.dmp

Filesize
960KB

Download
memory/3124-31-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3124-29-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3124-28-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3124-27-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download