4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096

General

Target

4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe
Size

201KB
MD5

0d653f6ed17965f1062dc7ccbaee7f42
SHA1

efa31100972404aba01b6feff3043667b2e20c57
SHA256

4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096
SHA512

96bb805bba3b67135bc4f5eb41444581881c313b4aec314bf4eb9a0c6f7677786737991f432ed9134f5dc999d20d59d4fe3941b364af0e01e04f19f927524fce
SSDEEP

3072:a74MyJjjlLzVjN50BdQqlYgp72xzbuawaGO0OJw8KWs6IgVLE7QkfIA:awj30dlZ+GVaRVLE7QkfI

Score

8^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Blocklisted process makes network request 4 IoCs

flow	pid	Process
15	2080	rundll32.exe
34	2080	rundll32.exe
36	2080	rundll32.exe
37	2080	rundll32.exe

Deletes itself 1 IoCs

pid	Process
952	rupdw.exe

Executes dropped EXE 1 IoCs

pid	Process
952	rupdw.exe

Loads dropped DLL 1 IoCs

pid	Process
2080	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 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3280-0-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral2/memory/3280-2-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral2/files/0x000a0000000233c2-4.dat	upx
behavioral2/memory/952-7-0x0000000000400000-0x000000000044A000-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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\pzhtt\\yczzy.dll\",method"	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)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\o:	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

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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\pzhtt	rupdw.exe
File created	\??\c:\Program Files\pzhtt\yczzy.dll	rupdw.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.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	rupdw.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

pid	Process
688	cmd.exe
3464	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

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

pid	Process
3464	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2080	rundll32.exe
2080	rundll32.exe
2080	rundll32.exe
2080	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2080	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3280	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe
952	rupdw.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3280 wrote to memory of 688	3280	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe	85
PID 3280 wrote to memory of 688	3280	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe	85
PID 3280 wrote to memory of 688	3280	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe	85
PID 688 wrote to memory of 3464	688	cmd.exe	88
PID 688 wrote to memory of 3464	688	cmd.exe	88
PID 688 wrote to memory of 3464	688	cmd.exe	88
PID 688 wrote to memory of 952	688	cmd.exe	90
PID 688 wrote to memory of 952	688	cmd.exe	90
PID 688 wrote to memory of 952	688	cmd.exe	90
PID 952 wrote to memory of 2080	952	rupdw.exe	91
PID 952 wrote to memory of 2080	952	rupdw.exe	91
PID 952 wrote to memory of 2080	952	rupdw.exe	91

C:\Users\Admin\AppData\Local\Temp\4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe
"C:\Users\Admin\AppData\Local\Temp\4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3280
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rupdw.exe "C:\Users\Admin\AppData\Local\Temp\4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:688
- - 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:3464
- - C:\Users\Admin\AppData\Local\Temp\rupdw.exe
    C:\Users\Admin\AppData\Local\Temp\\rupdw.exe "C:\Users\Admin\AppData\Local\Temp\4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:952
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\pzhtt\yczzy.dll",method C:\Users\Admin\AppData\Local\Temp\rupdw.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:2080

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

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\rupdw.exe

Filesize
202KB

MD5
074168bcd41a81322b67ccc489de7ee6

SHA1
90c6d9e94ed7cdfd8a8d2ce3b21c8dab98378f3f

SHA256
d5db2bf77b34855780ee5adbd01119fae0e404c45133731333aa866c3c625638

SHA512
82cb8bc774c5dc35a82b60ab7366dfea8162f854cfdae4672caea158742fa474b60a09a72a699a043f3840da7e458ff8a3bb0db368ac7b03fdeb2180562c7b3e

Download Submit
\??\c:\Program Files\pzhtt\yczzy.dll

Filesize
148KB

MD5
57b73092df360d53d197a10a600ead83

SHA1
38ea7aa5e310e3870bcf40b2133ef4231dc03e64

SHA256
f700c7972bdbb5da2b2e265b035c561dcd6cde75e4a8f9dac60cf0d634988898

SHA512
6d055ce6a2aa5fd270dd10d6353b73981b9f2195f0ee5a0468e4f6697cc7b58dc73b46be86a28056238178de04f7603fb5219cc9c11a28e29b8037e80c0c8a61

Download Submit
memory/952-7-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2080-10-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/2080-11-0x0000000010050000-0x0000000010051000-memory.dmp

Filesize
4KB

Download
memory/2080-12-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/2080-14-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/3280-0-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/3280-2-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads