aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532

General

Target

aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe
Size

85KB
MD5

204aad0fdfe058349eecdf39b1dccde1
SHA1

e05aa1bb3554ad4a551767d744b83ce291ad7f73
SHA256

aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532
SHA512

4a00857bb6490397d9adccc175b93e3e7d6cc5a7690245b7e1a4ff45d414dcdf7c9357a6294db280768d2364d86823b6ec98a285e05ce8354f59b27a7149a943
SSDEEP

1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNSiH:11PgEOng1d66jRVa+n4NmNNouukrD7Hj

Score

9^/10

bootkit persistence spyware stealer upx

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4520-13-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4520-16-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4520-17-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4520-18-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 7 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3920-9-0x0000000000400000-0x0000000000428000-memory.dmp	UPX
\??\c:\odkmeunl\xhxnwuo.hnx	UPX
behavioral2/memory/4520-12-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/4520-13-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/4520-16-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/4520-17-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/4520-18-0x0000000010000000-0x0000000010022000-memory.dmp	UPX

Blocklisted process makes network request 8 IoCs

Processes:

rundll32.exe

flow	pid	process
27	4520	rundll32.exe
44	4520	rundll32.exe
45	4520	rundll32.exe
46	4520	rundll32.exe
47	4520	rundll32.exe
52	4520	rundll32.exe
56	4520	rundll32.exe
61	4520	rundll32.exe

Deletes itself 1 IoCs

Processes:

wrewz.exe

pid process

3920 wrewz.exe
Executes dropped EXE 1 IoCs

Processes:

wrewz.exe

pid process

3920 wrewz.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

4520 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
3920	wrewz.exe

pid	process
3920	wrewz.exe

pid	process
4520	rundll32.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
\??\c:\odkmeunl\xhxnwuo.hnx	upx
behavioral2/memory/4520-12-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/4520-13-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/4520-16-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/4520-17-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/4520-18-0x0000000010000000-0x0000000010022000-memory.dmp	upx

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-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\odkmeunl\\xhxnwuo.hnx\",crc32"	rundll32.exe

Enumerates connected drives 3 TTPs 2 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) \??\a: rundll32.exe
File opened (read-only) \??\b: 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 (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe

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

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3252 taskkill.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4916 PING.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

rundll32.exe

pid process

4520 rundll32.exe
4520 rundll32.exe
4520 rundll32.exe
4520 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 4520 rundll32.exe
Token: SeDebugPrivilege 3252 taskkill.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exewrewz.exe

pid process

3312 aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe
3920 wrewz.exe

pid	process
3252	taskkill.exe

pid	process
4916	PING.EXE

pid	process
4520	rundll32.exe
4520	rundll32.exe
4520	rundll32.exe
4520	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	4520	rundll32.exe
Token: SeDebugPrivilege	3252	taskkill.exe

pid	process
3312	aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe
3920	wrewz.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.execmd.exewrewz.exerundll32.exe

description	pid	process	target process
PID 3312 wrote to memory of 5016	3312	aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe	cmd.exe
PID 3312 wrote to memory of 5016	3312	aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe	cmd.exe
PID 3312 wrote to memory of 5016	3312	aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe	cmd.exe
PID 5016 wrote to memory of 4916	5016	cmd.exe	PING.EXE
PID 5016 wrote to memory of 4916	5016	cmd.exe	PING.EXE
PID 5016 wrote to memory of 4916	5016	cmd.exe	PING.EXE
PID 5016 wrote to memory of 3920	5016	cmd.exe	wrewz.exe
PID 5016 wrote to memory of 3920	5016	cmd.exe	wrewz.exe
PID 5016 wrote to memory of 3920	5016	cmd.exe	wrewz.exe
PID 3920 wrote to memory of 4520	3920	wrewz.exe	rundll32.exe
PID 3920 wrote to memory of 4520	3920	wrewz.exe	rundll32.exe
PID 3920 wrote to memory of 4520	3920	wrewz.exe	rundll32.exe
PID 4520 wrote to memory of 3252	4520	rundll32.exe	taskkill.exe
PID 4520 wrote to memory of 3252	4520	rundll32.exe	taskkill.exe
PID 4520 wrote to memory of 3252	4520	rundll32.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe
"C:\Users\Admin\AppData\Local\Temp\aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3312

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wrewz.exe "C:\Users\Admin\AppData\Local\Temp\aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:5016

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:4916

C:\Users\Admin\AppData\Local\Temp\wrewz.exe
C:\Users\Admin\AppData\Local\Temp\\wrewz.exe "C:\Users\Admin\AppData\Local\Temp\aad00c349f3e97996f7a7cd066704ddc6ee6abb6449bcb288bb1fd775dc8b532.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3920

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\odkmeunl\xhxnwuo.hnx",crc32 C:\Users\Admin\AppData\Local\Temp\wrewz.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)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4520

\??\c:\windows\SysWOW64\taskkill.exe
taskkill /f /im attrib.exe
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wrewz.exe

Filesize
85KB

MD5
48bfe1a8e08f730440eb8d63114aaa16

SHA1
01b8c07d13b2cb4953b754de07fb9a2fe1d47a03

SHA256
408ab345d0bf128e1c18de095f2e74562fc440a59c579ca06903a150dad99b84

SHA512
96e1f751f5e223e1313cfcd96a0a81dc2629641422dc09c82778a9cfdb8361fdc1d9b2d43a8d4bf6a8f2ee879f50ef19bc62b6f391aa340110a5c5f59f4cbbc1

Download Submit
\??\c:\odkmeunl\xhxnwuo.hnx

Filesize
57KB

MD5
2f53f49e01f09d6e6064871eec1955cd

SHA1
a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

SHA256
964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

SHA512
2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

Download Submit
memory/3312-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3312-1-0x00000000005D0000-0x00000000005D1000-memory.dmp

Filesize
4KB

Download
memory/3312-3-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3920-7-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download
memory/3920-9-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4520-12-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/4520-13-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/4520-16-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/4520-17-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/4520-18-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads