6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab

General

Target

6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe
Size

87KB
MD5

c467b6089028b2e0b199f2b70dab62d5
SHA1

67d82d822997125676bc8f17483e3f9c44aa03fd
SHA256

6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab
SHA512

ccaba4bd74f0fe5082ce7e19a0635b510b1f3fda72141707d25f0f4a62981cc4c8d87d1e1a8e71c8bf0a4187c0057a5644d5a4439f68bb2402fe15f9028b6466
SSDEEP

1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNS7:11PgEOng1d66jRVa+n4NmNNouukrD7Hw

Score

9^/10

bootkit persistence spyware stealer upx

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/544-13-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/544-15-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/544-17-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1800-9-0x0000000000400000-0x0000000000428000-memory.dmp	UPX
\??\c:\rqsve\ttzps.tpt	UPX
behavioral2/memory/544-12-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/544-13-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/544-15-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/544-17-0x0000000010000000-0x0000000010022000-memory.dmp	UPX

Blocklisted process makes network request 8 IoCs

Processes:

rundll32.exe

flow	pid	process
24	544	rundll32.exe
34	544	rundll32.exe
35	544	rundll32.exe
36	544	rundll32.exe
47	544	rundll32.exe
48	544	rundll32.exe
56	544	rundll32.exe
69	544	rundll32.exe

Deletes itself 1 IoCs

Processes:

wehun.exe

pid process

1800 wehun.exe
Executes dropped EXE 1 IoCs

Processes:

wehun.exe

pid process

1800 wehun.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

544 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
1800	wehun.exe

pid	process
1800	wehun.exe

pid	process
544	rundll32.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
\??\c:\rqsve\ttzps.tpt	upx
behavioral2/memory/544-12-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/544-13-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/544-15-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/544-17-0x0000000010000000-0x0000000010022000-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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\rqsve\\ttzps.tpt\",crc32"	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)	\??\h:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	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)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	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

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

2604 taskkill.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1836 PING.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

rundll32.exe

pid process

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

Processes:

rundll32.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 544 rundll32.exe
Token: SeDebugPrivilege 2604 taskkill.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exewehun.exe

pid process

1240 6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe
1800 wehun.exe

pid	process
2604	taskkill.exe

pid	process
1836	PING.EXE

pid	process
544	rundll32.exe
544	rundll32.exe
544	rundll32.exe
544	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	544	rundll32.exe
Token: SeDebugPrivilege	2604	taskkill.exe

pid	process
1240	6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe
1800	wehun.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.execmd.exewehun.exerundll32.exe

description	pid	process	target process
PID 1240 wrote to memory of 2796	1240	6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe	cmd.exe
PID 1240 wrote to memory of 2796	1240	6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe	cmd.exe
PID 1240 wrote to memory of 2796	1240	6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe	cmd.exe
PID 2796 wrote to memory of 1836	2796	cmd.exe	PING.EXE
PID 2796 wrote to memory of 1836	2796	cmd.exe	PING.EXE
PID 2796 wrote to memory of 1836	2796	cmd.exe	PING.EXE
PID 2796 wrote to memory of 1800	2796	cmd.exe	wehun.exe
PID 2796 wrote to memory of 1800	2796	cmd.exe	wehun.exe
PID 2796 wrote to memory of 1800	2796	cmd.exe	wehun.exe
PID 1800 wrote to memory of 544	1800	wehun.exe	rundll32.exe
PID 1800 wrote to memory of 544	1800	wehun.exe	rundll32.exe
PID 1800 wrote to memory of 544	1800	wehun.exe	rundll32.exe
PID 544 wrote to memory of 2604	544	rundll32.exe	taskkill.exe
PID 544 wrote to memory of 2604	544	rundll32.exe	taskkill.exe
PID 544 wrote to memory of 2604	544	rundll32.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe
"C:\Users\Admin\AppData\Local\Temp\6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1240

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wehun.exe "C:\Users\Admin\AppData\Local\Temp\6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2796

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:1836

C:\Users\Admin\AppData\Local\Temp\wehun.exe
C:\Users\Admin\AppData\Local\Temp\\wehun.exe "C:\Users\Admin\AppData\Local\Temp\6fd318bc86ff6855277b624433e247944f3a92f57f5119e2957f6babba6846ab.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1800

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\rqsve\ttzps.tpt",crc32 C:\Users\Admin\AppData\Local\Temp\wehun.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:544

\??\c:\windows\SysWOW64\taskkill.exe
taskkill /f /im attrib.exe
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2604

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\wehun.exe

Filesize
87KB

MD5
3ee093d111ce35840f3b3caac1d6871f

SHA1
0d045b97761351988a1f345fb265cd81f0cc7e2a

SHA256
1c5dbd5723de3af1caf937462cbd54671baffbd565aa4820dc7a3f55013a6c9f

SHA512
189cabdf396de3d4d099cd4fd9c0a4d2782545a655ccda0583a786bdfd615363912c09b28e60f13b15958fd8bdbaeb50e9d40ca3631525a2ffe0e8248273a7fe

Download Submit
\??\c:\rqsve\ttzps.tpt

Filesize
57KB

MD5
2f53f49e01f09d6e6064871eec1955cd

SHA1
a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

SHA256
964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

SHA512
2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

Download Submit
memory/544-12-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/544-13-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/544-15-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/544-17-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/1240-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1240-1-0x0000000000A70000-0x0000000000AA2000-memory.dmp

Filesize
200KB

Download
memory/1240-3-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1800-7-0x00000000008B0000-0x00000000008E2000-memory.dmp

Filesize
200KB

Download
memory/1800-9-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads