b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743

General

Target

b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe
Size

151KB
MD5

bee9a2631e018ca27e335ccd71869142
SHA1

51879809f54a8df30c879881ce59e51aa6668eaa
SHA256

b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743
SHA512

644bcc012e5fcaf88664417fd57a7affcc53926f0721470639750c5bb06794f9a531081e3fcf5ccc41079556cb71cec3c52c783a5f78f0dad928dac69d02a67a
SSDEEP

1536:+fxvtgixq7OstjzjW6ZdjtETzR77i11GAbRp0BGiEA0O0o:+HIa6KTdNAbzSGiN0OJ

Score

8^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

Processes:

rundll32.exe

flow	pid	process
20	4220	rundll32.exe
37	4220	rundll32.exe
41	4220	rundll32.exe
42	4220	rundll32.exe
56	4220	rundll32.exe
59	4220	rundll32.exe
65	4220	rundll32.exe
66	4220	rundll32.exe

Deletes itself 1 IoCs

Processes:

ougvzvxb.exe

pid process

3428 ougvzvxb.exe
Executes dropped EXE 1 IoCs

Processes:

ougvzvxb.exe

pid process

3428 ougvzvxb.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

4220 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
3428	ougvzvxb.exe

pid	process
3428	ougvzvxb.exe

pid	process
4220	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-1-5-21-464762018-485119342-1613148473-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\htsem\\ktsfmniz.dll\",GetWindowClass"	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)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	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

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

System Location Discovery: System Language Discovery 1 TTPs 5 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

Processes:

b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.execmd.exePING.EXEougvzvxb.exerundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ougvzvxb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
discovery

Internet Connection Discovery
T1016.001

Processes:

cmd.exePING.EXE

pid process

4060 cmd.exe
1372 PING.EXE

pid	process
4060	cmd.exe
1372	PING.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

1372 PING.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

rundll32.exe

pid process

4220 rundll32.exe
4220 rundll32.exe
4220 rundll32.exe
4220 rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 4220 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exeougvzvxb.exe

pid process

4560 b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe
3428 ougvzvxb.exe

pid	process
1372	PING.EXE

pid	process
4220	rundll32.exe
4220	rundll32.exe
4220	rundll32.exe
4220	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	4220	rundll32.exe

pid	process
4560	b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe
3428	ougvzvxb.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.execmd.exeougvzvxb.exe

description	pid	process	target process
PID 4560 wrote to memory of 4060	4560	b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe	cmd.exe
PID 4560 wrote to memory of 4060	4560	b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe	cmd.exe
PID 4560 wrote to memory of 4060	4560	b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe	cmd.exe
PID 4060 wrote to memory of 1372	4060	cmd.exe	PING.EXE
PID 4060 wrote to memory of 1372	4060	cmd.exe	PING.EXE
PID 4060 wrote to memory of 1372	4060	cmd.exe	PING.EXE
PID 4060 wrote to memory of 3428	4060	cmd.exe	ougvzvxb.exe
PID 4060 wrote to memory of 3428	4060	cmd.exe	ougvzvxb.exe
PID 4060 wrote to memory of 3428	4060	cmd.exe	ougvzvxb.exe
PID 3428 wrote to memory of 4220	3428	ougvzvxb.exe	rundll32.exe
PID 3428 wrote to memory of 4220	3428	ougvzvxb.exe	rundll32.exe
PID 3428 wrote to memory of 4220	3428	ougvzvxb.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe
"C:\Users\Admin\AppData\Local\Temp\b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4560

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\ougvzvxb.exe "C:\Users\Admin\AppData\Local\Temp\b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe"
2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4060

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:1372

\??\c:\ougvzvxb.exe
c:\ougvzvxb.exe "C:\Users\Admin\AppData\Local\Temp\b6e94f1c459448dac82ac1fbb3b4538c53a9b9b8238913c2689b6d48f9788743.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3428

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\htsem\ktsfmniz.dll",GetWindowClass c:\ougvzvxb.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)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4220

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

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:\ougvzvxb.exe
Filesize
151KB

MD5
c8d72b9dcb644c2a458c804a81bcf193

SHA1
0126225c0788b77f1e01ea69b8a590592273c813

SHA256
5634e295b07214daf94b9147b234dd8a980d65e131fb56d11f3ef98c38228d28

SHA512
c5433f4c9bcc12700bf609726c08af210de14ddba9c91edfa5570cd484705126a6d3d594957acf8b686486b771f0207e068c5e226b9e5834c791b1eff501a06f

Download Submit
\??\c:\htsem\ktsfmniz.dll
Filesize
63KB

MD5
bec93912524f50c6f7c943716c7ef02b

SHA1
69ba8f1dd5a7d6cd94d688c691406cbd54be4486

SHA256
032570414587af2303431e8db5d5f4223e0147f4b63a2160b97d9a6ea531bd81

SHA512
41fb8970e9007c789227740e81a483bda806470ce25476589a3dfceddaaa60b20d890c37b56f8be83defb2a5b774dbd6c2026fc259884e8acf2971b06041f6a6

Download Submit
memory/3428-8-0x0000000000400000-0x0000000000425400-memory.dmp

Filesize
149KB

Download
memory/3428-6-0x0000000000400000-0x0000000000425400-memory.dmp

Filesize
149KB

Download
memory/4220-11-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/4220-12-0x00000000013E0000-0x00000000013E2000-memory.dmp

Filesize
8KB

Download
memory/4220-13-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/4220-15-0x00000000013E0000-0x00000000013E2000-memory.dmp

Filesize
8KB

Download
memory/4220-16-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/4220-17-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/4220-18-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/4220-26-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/4560-2-0x0000000000400000-0x0000000000425400-memory.dmp

Filesize
149KB

Download
memory/4560-0-0x0000000000400000-0x0000000000425400-memory.dmp

Filesize
149KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads