f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da

General

Target

f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe
Size

405KB
MD5

e52619c43b63967354da407fb1b7de57
SHA1

80919a899ff2dbc1f8550bf4cb363f969c49e868
SHA256

f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da
SHA512

1b88cda7011df2fb662d1c8194e0cbd7bb689b452c54e9ca211b95dd9386e081c27842a9972acc24ac26309bb1988ac83d107947851183c953efbbcc2b69da8e
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4J:gtRfJcNYFNm8UhlZGseJ

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 10 IoCs

Processes:

rundll32.exe

flow	pid	process
3	2632	rundll32.exe
5	2632	rundll32.exe
6	2632	rundll32.exe
7	2632	rundll32.exe
8	2632	rundll32.exe
9	2632	rundll32.exe
10	2632	rundll32.exe
11	2632	rundll32.exe
13	2632	rundll32.exe
14	2632	rundll32.exe

Deletes itself 1 IoCs

Processes:

oktuf.exe

pid process

2752 oktuf.exe
Executes dropped EXE 1 IoCs

Processes:

oktuf.exe

pid process

2752 oktuf.exe
Loads dropped DLL 6 IoCs

Processes:

cmd.exerundll32.exe

pid process

2092 cmd.exe
2092 cmd.exe
2632 rundll32.exe
2632 rundll32.exe
2632 rundll32.exe
2632 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
2752	oktuf.exe

pid	process
2752	oktuf.exe

pid	process
2092	cmd.exe
2092	cmd.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	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-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\vjyqt\\lnqky.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)	\??\i:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	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

2632 rundll32.exe
Drops file in Program Files directory 2 IoCs

Processes:

oktuf.exe

description ioc process

File opened for modification \??\c:\Program Files\vjyqt oktuf.exe
File created \??\c:\Program Files\vjyqt\lnqky.dll oktuf.exe

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

description	ioc	process
File opened for modification	\??\c:\Program Files\vjyqt	oktuf.exe
File created	\??\c:\Program Files\vjyqt\lnqky.dll	oktuf.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2568 PING.EXE

pid	process
2568	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe
2632	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 2632 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exeoktuf.exe

pid process

1932 f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe
2752 oktuf.exe

description	pid	process
Token: SeDebugPrivilege	2632	rundll32.exe

pid	process
1932	f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe
2752	oktuf.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.execmd.exeoktuf.exe

description	pid	process	target process
PID 1932 wrote to memory of 2092	1932	f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe	cmd.exe
PID 1932 wrote to memory of 2092	1932	f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe	cmd.exe
PID 1932 wrote to memory of 2092	1932	f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe	cmd.exe
PID 1932 wrote to memory of 2092	1932	f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe	cmd.exe
PID 2092 wrote to memory of 2568	2092	cmd.exe	PING.EXE
PID 2092 wrote to memory of 2568	2092	cmd.exe	PING.EXE
PID 2092 wrote to memory of 2568	2092	cmd.exe	PING.EXE
PID 2092 wrote to memory of 2568	2092	cmd.exe	PING.EXE
PID 2092 wrote to memory of 2752	2092	cmd.exe	oktuf.exe
PID 2092 wrote to memory of 2752	2092	cmd.exe	oktuf.exe
PID 2092 wrote to memory of 2752	2092	cmd.exe	oktuf.exe
PID 2092 wrote to memory of 2752	2092	cmd.exe	oktuf.exe
PID 2752 wrote to memory of 2632	2752	oktuf.exe	rundll32.exe
PID 2752 wrote to memory of 2632	2752	oktuf.exe	rundll32.exe
PID 2752 wrote to memory of 2632	2752	oktuf.exe	rundll32.exe
PID 2752 wrote to memory of 2632	2752	oktuf.exe	rundll32.exe
PID 2752 wrote to memory of 2632	2752	oktuf.exe	rundll32.exe
PID 2752 wrote to memory of 2632	2752	oktuf.exe	rundll32.exe
PID 2752 wrote to memory of 2632	2752	oktuf.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe
"C:\Users\Admin\AppData\Local\Temp\f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\oktuf.exe "C:\Users\Admin\AppData\Local\Temp\f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2092

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:2568

C:\Users\Admin\AppData\Local\Temp\oktuf.exe
C:\Users\Admin\AppData\Local\Temp\\oktuf.exe "C:\Users\Admin\AppData\Local\Temp\f1b6c0789d43249c97ebce3616bd4b8f19b60a7ef8610bc96715d8a13466c8da.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2752

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\Program Files\vjyqt\lnqky.dll",Verify C:\Users\Admin\AppData\Local\Temp\oktuf.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:2632

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

Replay Monitor

Loading Replay Monitor...

Downloads

\??\c:\Program Files\vjyqt\lnqky.dll
Filesize
228KB

MD5
4c1a8e333c397a66666a65e88f71d918

SHA1
cde5c48301940f6f8344f50d22df46db9c671c2e

SHA256
ebd02fb94239b96b08e028b2daa8fcfd51aee8e1b4e26e8d99fc6f8cd9107ffc

SHA512
e47bddf53d9c8bb15c09d1f2c1784fff8f2eefa6beeb3d0b03d1f2a0389806106094c58ac21dc67043760d9660c24717349448d4137626ebabb7586e3207836d

Download Submit
\Users\Admin\AppData\Local\Temp\oktuf.exe
Filesize
405KB

MD5
43ecf412897e14cfc7586c2ab134eb12

SHA1
1a5d59068f7615a45b2f053208f7c372f51812a1

SHA256
ed076ed9443b0c80ca9d8d4855dca7ffa07900256cadbc76278383e8daab82f2

SHA512
a99c64473990af94117ce62267c3b60d7b6252aa90ff1c8e3ad19d37e76d0dd3b8aa3459edd34c3760daa815b1e35828a5581d47ad46b5a80a29c7cc3d05fc85

Download Submit
memory/1932-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1932-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2092-5-0x0000000000240000-0x00000000002A4000-memory.dmp

Filesize
400KB

Download
memory/2632-13-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2632-17-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2632-16-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2632-19-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2632-20-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2632-22-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2752-10-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2752-8-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads