03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a

General

Target

03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe
Size

404KB
MD5

3ee0e7a1b4559ba16d83cf64f2d91a6e
SHA1

49a65a66917c0923d76bea5d24de7b0723434e7c
SHA256

03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a
SHA512

25994d5c7569ba06d938a901a8677258eaea4b136f4c0b7032b40ba9103ef724fc532849ca58c4712e553736f8173e98fc12dd1d2ed4221c9065f810f750adb2
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4N:gtRfJcNYFNm8UhlZGseN

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 10 IoCs

Processes:

rundll32.exe

flow	pid	process
3	2536	rundll32.exe
5	2536	rundll32.exe
8	2536	rundll32.exe
9	2536	rundll32.exe
10	2536	rundll32.exe
13	2536	rundll32.exe
14	2536	rundll32.exe
15	2536	rundll32.exe
17	2536	rundll32.exe
18	2536	rundll32.exe

Deletes itself 1 IoCs

Processes:

vknkm.exe

pid process

2632 vknkm.exe
Executes dropped EXE 1 IoCs

Processes:

vknkm.exe

pid process

2632 vknkm.exe
Loads dropped DLL 6 IoCs

Processes:

cmd.exerundll32.exe

pid process

2960 cmd.exe
2960 cmd.exe
2536 rundll32.exe
2536 rundll32.exe
2536 rundll32.exe
2536 rundll32.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
2632	vknkm.exe

pid	process
2632	vknkm.exe

pid	process
2960	cmd.exe
2960	cmd.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\pwhvvc\\apobz.dll\",Verify"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

2536 rundll32.exe
Drops file in Program Files directory 2 IoCs

Processes:

vknkm.exe

description ioc process

File opened for modification \??\c:\Program Files\pwhvvc vknkm.exe
File created \??\c:\Program Files\pwhvvc\apobz.dll vknkm.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

description	ioc	process
File opened for modification	\??\c:\Program Files\pwhvvc	vknkm.exe
File created	\??\c:\Program Files\pwhvvc\apobz.dll	vknkm.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2612 PING.EXE

pid	process
2612	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe
2536	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 2536 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exevknkm.exe

pid process

2212 03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe
2632 vknkm.exe

description	pid	process
Token: SeDebugPrivilege	2536	rundll32.exe

pid	process
2212	03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe
2632	vknkm.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.execmd.exevknkm.exe

description	pid	process	target process
PID 2212 wrote to memory of 2960	2212	03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe	cmd.exe
PID 2212 wrote to memory of 2960	2212	03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe	cmd.exe
PID 2212 wrote to memory of 2960	2212	03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe	cmd.exe
PID 2212 wrote to memory of 2960	2212	03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe	cmd.exe
PID 2960 wrote to memory of 2612	2960	cmd.exe	PING.EXE
PID 2960 wrote to memory of 2612	2960	cmd.exe	PING.EXE
PID 2960 wrote to memory of 2612	2960	cmd.exe	PING.EXE
PID 2960 wrote to memory of 2612	2960	cmd.exe	PING.EXE
PID 2960 wrote to memory of 2632	2960	cmd.exe	vknkm.exe
PID 2960 wrote to memory of 2632	2960	cmd.exe	vknkm.exe
PID 2960 wrote to memory of 2632	2960	cmd.exe	vknkm.exe
PID 2960 wrote to memory of 2632	2960	cmd.exe	vknkm.exe
PID 2632 wrote to memory of 2536	2632	vknkm.exe	rundll32.exe
PID 2632 wrote to memory of 2536	2632	vknkm.exe	rundll32.exe
PID 2632 wrote to memory of 2536	2632	vknkm.exe	rundll32.exe
PID 2632 wrote to memory of 2536	2632	vknkm.exe	rundll32.exe
PID 2632 wrote to memory of 2536	2632	vknkm.exe	rundll32.exe
PID 2632 wrote to memory of 2536	2632	vknkm.exe	rundll32.exe
PID 2632 wrote to memory of 2536	2632	vknkm.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe
"C:\Users\Admin\AppData\Local\Temp\03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2212

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vknkm.exe "C:\Users\Admin\AppData\Local\Temp\03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2960

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:2612

C:\Users\Admin\AppData\Local\Temp\vknkm.exe
C:\Users\Admin\AppData\Local\Temp\\vknkm.exe "C:\Users\Admin\AppData\Local\Temp\03cc044116011a0d8f883a8bc2ed5f3a2bc5f69453adba3bdf60b8e77ac0619a.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2632

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\Program Files\pwhvvc\apobz.dll",Verify C:\Users\Admin\AppData\Local\Temp\vknkm.exe
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2536

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\??\c:\Program Files\pwhvvc\apobz.dll
Filesize
228KB

MD5
5d3466b5d72c1df5849021a84d93669b

SHA1
ea14470ea7e8867ef1119cb944fdb096823a8584

SHA256
d24fbc31e939380a0df49a0f9871bf99f198c05549503f5e11193a8f1cce20ee

SHA512
5fb662c5d1dfdd70dda99cbc5dba1eb75287088b95eb699ea2fb148756b113e2fa7a8a599f7c06572800054a040985d4c0c8535f1f31b7ed79a4f2a8c5a3f8cd

Download Submit
\Users\Admin\AppData\Local\Temp\vknkm.exe
Filesize
404KB

MD5
4a1f4828fa2c0f4730615d7a25140b4f

SHA1
979712cb770da08963e7b14ea5022e57a11375d2

SHA256
7bff0a3a4f6bd027a99efd9a658da00247328cf587683e3ddfddbd70df438c0e

SHA512
45ecf2a0713b84a28d9c706f845371a319239ad6c7c1b7500bc3f262309ad74faa81c33dfad89552470e360d94e515528cbca909b76eb25c133d7360bbae22b8

Download Submit
memory/2212-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2212-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2536-17-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2536-15-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2536-18-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2536-20-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2632-10-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2960-6-0x0000000000160000-0x00000000001C4000-memory.dmp

Filesize
400KB

Download
memory/2960-8-0x0000000000160000-0x00000000001C4000-memory.dmp

Filesize
400KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads