zharkbot | 4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe

General

Target

4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.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/2708-23-0x0000000000400000-0x0000000000455000-memory.dmp	zharkcore
behavioral2/memory/2708-24-0x0000000000400000-0x0000000000455000-memory.dmp	zharkcore
behavioral2/memory/2708-25-0x0000000000400000-0x0000000000455000-memory.dmp	zharkcore
behavioral2/memory/2708-27-0x0000000000400000-0x0000000000455000-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__	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.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	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.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/4752-10-0x0000000000B80000-0x00000000013FE000-memory.dmp	themida
behavioral2/memory/4752-34-0x0000000000B80000-0x00000000013FE000-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	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4752 set thread context of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1584	2708	WerFault.exe	101

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	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.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
4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe
4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe
812	Powershell.exe
812	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	Powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 2708	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	101
PID 4752 wrote to memory of 812	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	109
PID 4752 wrote to memory of 812	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	109
PID 4752 wrote to memory of 812	4752	4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe	109

C:\Users\Admin\AppData\Local\Temp\4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.exe
"C:\Users\Admin\AppData\Local\Temp\4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.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:4752
- 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:2708
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2708 -s 580
    3⤵
    - Program crash
    PID:1584
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\4b5a876b1c230b28c0862d5f8158b3657016709855bf3329d8fea6cada3adbfe.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:812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2708 -ip 2708
1⤵
PID:3104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hxvbe4te.hrd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/812-52-0x0000000005EE0000-0x0000000005EFE000-memory.dmp

Filesize
120KB

Download
memory/812-60-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/812-55-0x00000000063B0000-0x00000000063CA000-memory.dmp

Filesize
104KB

Download
memory/812-54-0x0000000007170000-0x0000000007206000-memory.dmp

Filesize
600KB

Download
memory/812-53-0x0000000005F10000-0x0000000005F5C000-memory.dmp

Filesize
304KB

Download
memory/812-33-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/812-47-0x0000000005870000-0x0000000005BC4000-memory.dmp

Filesize
3.3MB

Download
memory/812-56-0x0000000006400000-0x0000000006422000-memory.dmp

Filesize
136KB

Download
memory/812-41-0x0000000005800000-0x0000000005866000-memory.dmp

Filesize
408KB

Download
memory/812-40-0x0000000005790000-0x00000000057F6000-memory.dmp

Filesize
408KB

Download
memory/812-39-0x0000000004E90000-0x0000000004EB2000-memory.dmp

Filesize
136KB

Download
memory/812-37-0x0000000004FB0000-0x00000000055D8000-memory.dmp

Filesize
6.2MB

Download
memory/812-35-0x0000000000D70000-0x0000000000DA6000-memory.dmp

Filesize
216KB

Download
memory/812-36-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/2708-24-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2708-25-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2708-23-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2708-27-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4752-15-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-13-0x0000000000B80000-0x00000000013FE000-memory.dmp

Filesize
8.5MB

Download
memory/4752-21-0x0000000005DC0000-0x0000000005F00000-memory.dmp

Filesize
1.2MB

Download
memory/4752-34-0x0000000000B80000-0x00000000013FE000-memory.dmp

Filesize
8.5MB

Download
memory/4752-18-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-16-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-38-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-22-0x0000000003380000-0x00000000033A2000-memory.dmp

Filesize
136KB

Download
memory/4752-14-0x0000000077090000-0x0000000077091000-memory.dmp

Filesize
4KB

Download
memory/4752-0-0x0000000000B80000-0x00000000013FE000-memory.dmp

Filesize
8.5MB

Download
memory/4752-12-0x0000000006100000-0x00000000066A4000-memory.dmp

Filesize
5.6MB

Download
memory/4752-11-0x0000000005AB0000-0x0000000005B4C000-memory.dmp

Filesize
624KB

Download
memory/4752-10-0x0000000000B80000-0x00000000013FE000-memory.dmp

Filesize
8.5MB

Download
memory/4752-5-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-6-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-4-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-3-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-2-0x0000000077070000-0x0000000077160000-memory.dmp

Filesize
960KB

Download
memory/4752-1-0x0000000077090000-0x0000000077091000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads