00fc4b8a4c65c06766608f3ef3f92385c8e147f5991dabe290e33dd14b39ad44

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
31/07/2024, 05:19

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General

Target

msimg32.dll
Size

4.9MB
MD5

01f5cdd59fc36a636abd69c6be719f3e
SHA1

8ba271fe2998582a67b025b5e794d0174f2c852b
SHA256

00fc4b8a4c65c06766608f3ef3f92385c8e147f5991dabe290e33dd14b39ad44
SHA512

7cb4c643abed14da14876dc78c9ab4769bd856b1d083aa926804d94a7db64b8a84fa6fb92b10fc0ab8c8682a947b5c3d146e59b7623e95b9dd28427e15b48a3b
SSDEEP

49152:lOrEyCal8VnN+LwbEOCAQFhZ81wm+R9BlwxPJfkwDQby10ZLOkALP7fi7HAap:olCQ8VN+TAghZbR9y6wKy6kkkOHAap

Score

6^/10

discovery persistence

Malware Config

Signatures

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-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\*ChromeUpdate = "rundll32.exe C:\\Users\\Admin\\Documents\\FirefoxData.dll,EntryPoint"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2036	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2760	536	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 4 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 2036	1988	rundll32.exe	31
PID 1988 wrote to memory of 2036	1988	rundll32.exe	31
PID 1988 wrote to memory of 2036	1988	rundll32.exe	31
PID 1988 wrote to memory of 2036	1988	rundll32.exe	31
PID 1988 wrote to memory of 2036	1988	rundll32.exe	31
PID 1988 wrote to memory of 2036	1988	rundll32.exe	31
PID 1988 wrote to memory of 2036	1988	rundll32.exe	31
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 2036 wrote to memory of 536	2036	rundll32.exe	32
PID 536 wrote to memory of 2760	536	rundll32.exe	33
PID 536 wrote to memory of 2760	536	rundll32.exe	33
PID 536 wrote to memory of 2760	536	rundll32.exe	33
PID 536 wrote to memory of 2760	536	rundll32.exe	33
PID 2036 wrote to memory of 2772	2036	rundll32.exe	34
PID 2036 wrote to memory of 2772	2036	rundll32.exe	34
PID 2036 wrote to memory of 2772	2036	rundll32.exe	34
PID 2036 wrote to memory of 2772	2036	rundll32.exe	34
PID 2772 wrote to memory of 2892	2772	cmd.exe	36
PID 2772 wrote to memory of 2892	2772	cmd.exe	36
PID 2772 wrote to memory of 2892	2772	cmd.exe	36
PID 2772 wrote to memory of 2892	2772	cmd.exe	36

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\msimg32.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\msimg32.dll,#1
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2036
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:536
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 536 -s 196
      4⤵
      Program crash
      PID:2760
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2772
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:2892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/536-13-0x0000000000110000-0x000000000018E000-memory.dmp

Filesize
504KB

Download
memory/536-15-0x0000000000110000-0x000000000018E000-memory.dmp

Filesize
504KB

Download
memory/536-12-0x0000000000110000-0x000000000018E000-memory.dmp

Filesize
504KB

Download
memory/536-9-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/536-7-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/536-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/536-3-0x0000000000110000-0x000000000018E000-memory.dmp

Filesize
504KB

Download
memory/2036-1-0x0000000065013000-0x000000006502D000-memory.dmp

Filesize
104KB

Download
memory/2036-0-0x0000000065000000-0x00000000654EA000-memory.dmp

Filesize
4.9MB

Download
memory/2036-2-0x0000000065000000-0x00000000654EA000-memory.dmp

Filesize
4.9MB

Download
memory/2036-16-0x0000000065000000-0x00000000654EA000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads