a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa

General

Target

a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe
Size

95KB
MD5

6a60b277429c8903dbc2956a56bc80de
SHA1

fb0641f28f19f24906ca43d4a87636c60eb5f4a7
SHA256

a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa
SHA512

4a9b27645889b0e11074922e6f9f0cb4228a395bee03bef09677ce93af6c3b5b534bd49f83cba41a0ed2fd80be6a01ff2384d5ca145b4ee9ecf5dda00689fa7c
SSDEEP

1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNSjcU:11PgEOng1d66jRVa+n4NmNNouukrD7HG

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 7 IoCs

flow	pid	Process
23	1904	rundll32.exe
30	1904	rundll32.exe
31	1904	rundll32.exe
32	1904	rundll32.exe
46	1904	rundll32.exe
54	1904	rundll32.exe
69	1904	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3440	qcfyr.exe

Executes dropped EXE 1 IoCs

pid	Process
3440	qcfyr.exe

Loads dropped DLL 1 IoCs

pid	Process
1904	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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x00070000000234cc-10.dat	upx
behavioral2/memory/1904-12-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/1904-13-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/1904-15-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/1904-18-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/1904-19-0x0000000010000000-0x0000000010022000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\xrxsf\\upluo.puu\",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

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

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

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

Kills process with taskkill 1 IoCs

evasion

pid	Process
4468	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3384	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1904	rundll32.exe
1904	rundll32.exe
1904	rundll32.exe
1904	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1904	rundll32.exe
Token: SeDebugPrivilege	4468	taskkill.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2904	a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe
3440	qcfyr.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 1628	2904	a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe	85
PID 2904 wrote to memory of 1628	2904	a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe	85
PID 2904 wrote to memory of 1628	2904	a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe	85
PID 1628 wrote to memory of 3384	1628	cmd.exe	88
PID 1628 wrote to memory of 3384	1628	cmd.exe	88
PID 1628 wrote to memory of 3384	1628	cmd.exe	88
PID 1628 wrote to memory of 3440	1628	cmd.exe	90
PID 1628 wrote to memory of 3440	1628	cmd.exe	90
PID 1628 wrote to memory of 3440	1628	cmd.exe	90
PID 3440 wrote to memory of 1904	3440	qcfyr.exe	91
PID 3440 wrote to memory of 1904	3440	qcfyr.exe	91
PID 3440 wrote to memory of 1904	3440	qcfyr.exe	91
PID 1904 wrote to memory of 4468	1904	rundll32.exe	92
PID 1904 wrote to memory of 4468	1904	rundll32.exe	92
PID 1904 wrote to memory of 4468	1904	rundll32.exe	92

C:\Users\Admin\AppData\Local\Temp\a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe
"C:\Users\Admin\AppData\Local\Temp\a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\qcfyr.exe "C:\Users\Admin\AppData\Local\Temp\a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1628
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:3384
- - C:\Users\Admin\AppData\Local\Temp\qcfyr.exe
    C:\Users\Admin\AppData\Local\Temp\\qcfyr.exe "C:\Users\Admin\AppData\Local\Temp\a8d86fc169f7d3936cc83adf94a4cf69dae5e72b3d2fd60a1af22202584d03aa.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3440
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\xrxsf\upluo.puu",crc32 C:\Users\Admin\AppData\Local\Temp\qcfyr.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:1904
    - - \??\c:\windows\SysWOW64\taskkill.exe
        
        taskkill /f /im attrib.exe
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4468

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\qcfyr.exe

Filesize
96KB

MD5
01e6db9575c103c955bee1626450b58f

SHA1
1566f2ad08c988e7fe3b88594634ee2eddbdac7f

SHA256
5803495167631dee4d748233796216822d933eac30e6a1ea3b7f6b6b3cea6fca

SHA512
80206b9d4b02df63299ef2863a4a4eee526134a5b6e3f7f7d7c158bd8a275b4fe620d1a816c75ef5dfd5ee17c7cf7b856396b3944c7f02fe5fcfd79c7c5bfaae

Download Submit
\??\c:\xrxsf\upluo.puu

Filesize
57KB

MD5
2f53f49e01f09d6e6064871eec1955cd

SHA1
a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

SHA256
964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

SHA512
2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

Download Submit
memory/1904-12-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/1904-13-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/1904-15-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/1904-18-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/1904-19-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2904-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2904-1-0x00000000009F0000-0x0000000000A22000-memory.dmp

Filesize
200KB

Download
memory/2904-3-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3440-7-0x0000000000930000-0x0000000000962000-memory.dmp

Filesize
200KB

Download
memory/3440-9-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads