4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e

General

Target

4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe
Size

225KB
MD5

d37f02717fe2f2b6cfa27e3cbb233424
SHA1

42abb67d9ec0ebe3cba83b15a7b1b1e54c52ea31
SHA256

4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e
SHA512

b855311c20dc565bf6d362a8b2fceba5d74891a0d0857356e3e61eeba31bb421e61f9e244ac28f0171ec4df3a2b767d17877075c32f68ba1bb1a5f362465361f
SSDEEP

6144:XA2P27yTAnKGw0hjFhSR/W11yAJ9v0pMtRCpYM:XATuTAnKGwUAW3ycQqgf

Score

3^/10

discovery

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4864	1028	WerFault.exe	93
1392	628	WerFault.exe	81

System Location Discovery: System Language Discovery 1 TTPs 2 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	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client"	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe
628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3420	Explorer.EXE
Token: SeCreatePagefilePrivilege	3420	Explorer.EXE
Token: SeShutdownPrivilege	3420	Explorer.EXE
Token: SeCreatePagefilePrivilege	3420	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1028	winver.exe
628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 1028	628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe	93
PID 628 wrote to memory of 1028	628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe	93
PID 628 wrote to memory of 1028	628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe	93
PID 628 wrote to memory of 1028	628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe	93
PID 1028 wrote to memory of 3420	1028	winver.exe	56
PID 628 wrote to memory of 3420	628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe	56
PID 628 wrote to memory of 2500	628	4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe	42

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2500

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3420
- C:\Users\Admin\AppData\Local\Temp\4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe
  "C:\Users\Admin\AppData\Local\Temp\4a027c3ae6a881b357b009c7f59e13fe69d9a3d36dc0ba1e0c30742cf4adb42e.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:628
- - C:\Windows\SysWOW64\winver.exe
    winver
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:1028
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1028 -s 192
      4⤵
      Program crash
      PID:4864
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 936
    3⤵
    - Program crash
    PID:1392

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman
1⤵
- Modifies data under HKEY_USERS
PID:2128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1028 -ip 1028
1⤵
PID:3524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 628 -ip 628
1⤵
PID:4228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/628-8-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/628-2-0x00000000025A0000-0x00000000025A1000-memory.dmp

Filesize
4KB

Download
memory/628-3-0x00000000046D0000-0x0000000004D28000-memory.dmp

Filesize
6.3MB

Download
memory/628-4-0x00000000025A0000-0x00000000025A1000-memory.dmp

Filesize
4KB

Download
memory/628-1-0x00000000046D0000-0x0000000004D28000-memory.dmp

Filesize
6.3MB

Download
memory/628-11-0x0000000005AE0000-0x00000000064E0000-memory.dmp

Filesize
10.0MB

Download
memory/628-15-0x0000000005AE0000-0x00000000064E0000-memory.dmp

Filesize
10.0MB

Download
memory/628-19-0x00000000046D0000-0x0000000004D28000-memory.dmp

Filesize
6.3MB

Download
memory/2500-14-0x0000000000880000-0x0000000000886000-memory.dmp

Filesize
24KB

Download
memory/2500-20-0x0000000000880000-0x0000000000886000-memory.dmp

Filesize
24KB

Download
memory/3420-6-0x00000000001A0000-0x00000000001A6000-memory.dmp

Filesize
24KB

Download
memory/3420-7-0x00000000001A0000-0x00000000001A6000-memory.dmp

Filesize
24KB

Download
memory/3420-12-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download

Analysis

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