a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2

General

Target

a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe
Size

225KB
MD5

a724f613478a2c4aa3b656b010673b45
SHA1

c2185860571b6fb8143aab37bdfffe1b4a028d73
SHA256

a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2
SHA512

0dcdd17be81005758655f257d90a7d2b2290e61d6c07e891b11b51d54a73407c1f3a09938d9194b1e2b7e56fc6564a6932c4394f07530e6fdd1987f2300fd07f
SSDEEP

6144:3A2P27yTAnKGw0hjFhSR/W11yAJ9v0pMtRCpYM:3ATuTAnKGwUAW3ycQqgP

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
1672	1140	WerFault.exe	93
1676	4860	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	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.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
4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe
4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1140	winver.exe
4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 1140	4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe	93
PID 4860 wrote to memory of 1140	4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe	93
PID 4860 wrote to memory of 1140	4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe	93
PID 4860 wrote to memory of 1140	4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe	93
PID 1140 wrote to memory of 3504	1140	winver.exe	56
PID 4860 wrote to memory of 3504	4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe	56
PID 4860 wrote to memory of 2864	4860	a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe	49

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2864

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3504
- C:\Users\Admin\AppData\Local\Temp\a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe
  "C:\Users\Admin\AppData\Local\Temp\a877c3fba25c91edf82d97992beb4c873261c1aa4149572c575883a28befa6e2.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4860
- - C:\Windows\SysWOW64\winver.exe
    winver
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:1140
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1140 -s 300
      4⤵
      Program crash
      PID:1672
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 856
    3⤵
    - Program crash
    PID:1676

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman
1⤵
- Modifies data under HKEY_USERS
PID:392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1140 -ip 1140
1⤵
PID:1696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4860 -ip 4860
1⤵
PID:4764

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/2864-17-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2864-23-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/3504-10-0x0000000000AB0000-0x0000000000AB6000-memory.dmp

Filesize
24KB

Download
memory/3504-9-0x0000000000AB0000-0x0000000000AB6000-memory.dmp

Filesize
24KB

Download
memory/3504-15-0x0000000000B70000-0x0000000000B76000-memory.dmp

Filesize
24KB

Download
memory/4860-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4860-7-0x00000000044E0000-0x00000000044E1000-memory.dmp

Filesize
4KB

Download
memory/4860-6-0x00000000044E0000-0x00000000044E1000-memory.dmp

Filesize
4KB

Download
memory/4860-1-0x0000000004680000-0x0000000004CD8000-memory.dmp

Filesize
6.3MB

Download
memory/4860-4-0x00000000044E0000-0x00000000044E1000-memory.dmp

Filesize
4KB

Download
memory/4860-5-0x00000000044E0000-0x00000000044E1000-memory.dmp

Filesize
4KB

Download
memory/4860-14-0x0000000005A90000-0x0000000006490000-memory.dmp

Filesize
10.0MB

Download
memory/4860-3-0x0000000004680000-0x0000000004CD8000-memory.dmp

Filesize
6.3MB

Download
memory/4860-18-0x0000000005A90000-0x0000000006490000-memory.dmp

Filesize
10.0MB

Download
memory/4860-22-0x0000000004680000-0x0000000004CD8000-memory.dmp

Filesize
6.3MB

Download
memory/4860-2-0x00000000044E0000-0x00000000044E1000-memory.dmp

Filesize
4KB

Download

Analysis

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