6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6

General

Target

6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe
Size

152KB
MD5

f8f43f6b78f13f67a4892abadad8d264
SHA1

36ee3d9f4de081b72f31211c7eb01b8ac0176d61
SHA256

6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6
SHA512

71639ef215a47217f4241077e1e3c93c60c67d2c54229289709f17a3826bdbc0f60170e8989043a983dcb0a3232d8e04f538b246c351ac24fb2602dc7b18428b
SSDEEP

3072:oZpYg19EeiLLmjempGuCYooEK1JWaCItULG3rt2Wcora4dIn:OPjEl6jLiQ1JW+Oy3p/W

Score

7^/10

bootkit persistence spyware stealer

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0007000000016d89-17.dat	acprotect

Deletes itself 1 IoCs

pid	Process
1612	oymvn.exe

Executes dropped EXE 2 IoCs

pid	Process
1612	oymvn.exe
1668	gxkqzes.exe

Loads dropped DLL 7 IoCs

pid	Process
1676	cmd.exe
1676	cmd.exe
1612	oymvn.exe
1668	gxkqzes.exe
1668	gxkqzes.exe
1668	gxkqzes.exe
1668	gxkqzes.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

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-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Linycpy = "c:\\Program Files\\impyl\\gxkqzes.exe \"c:\\Program Files\\impyl\\gxkqzes.dll\",SetHandle"	gxkqzes.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)	\??\n:	gxkqzes.exe
File opened (read-only)	\??\p:	gxkqzes.exe
File opened (read-only)	\??\y:	gxkqzes.exe
File opened (read-only)	\??\a:	gxkqzes.exe
File opened (read-only)	\??\h:	gxkqzes.exe
File opened (read-only)	\??\j:	gxkqzes.exe
File opened (read-only)	\??\k:	gxkqzes.exe
File opened (read-only)	\??\m:	gxkqzes.exe
File opened (read-only)	\??\z:	gxkqzes.exe
File opened (read-only)	\??\b:	gxkqzes.exe
File opened (read-only)	\??\g:	gxkqzes.exe
File opened (read-only)	\??\s:	gxkqzes.exe
File opened (read-only)	\??\v:	gxkqzes.exe
File opened (read-only)	\??\t:	gxkqzes.exe
File opened (read-only)	\??\e:	gxkqzes.exe
File opened (read-only)	\??\i:	gxkqzes.exe
File opened (read-only)	\??\l:	gxkqzes.exe
File opened (read-only)	\??\o:	gxkqzes.exe
File opened (read-only)	\??\r:	gxkqzes.exe
File opened (read-only)	\??\q:	gxkqzes.exe
File opened (read-only)	\??\u:	gxkqzes.exe
File opened (read-only)	\??\w:	gxkqzes.exe
File opened (read-only)	\??\x:	gxkqzes.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	gxkqzes.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\impyl\gxkqzes.dll	oymvn.exe
File created	\??\c:\Program Files\impyl\gxkqzes.exe	oymvn.exe
File opened for modification	\??\c:\Program Files\impyl\gxkqzes.exe	oymvn.exe
File opened for modification	\??\c:\Program Files\impyl	oymvn.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	gxkqzes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	gxkqzes.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2392	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1668	gxkqzes.exe
1668	gxkqzes.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1668	gxkqzes.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2228	6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe
1612	oymvn.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 1676	2228	6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe	30
PID 2228 wrote to memory of 1676	2228	6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe	30
PID 2228 wrote to memory of 1676	2228	6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe	30
PID 2228 wrote to memory of 1676	2228	6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe	30
PID 1676 wrote to memory of 2392	1676	cmd.exe	32
PID 1676 wrote to memory of 2392	1676	cmd.exe	32
PID 1676 wrote to memory of 2392	1676	cmd.exe	32
PID 1676 wrote to memory of 2392	1676	cmd.exe	32
PID 1676 wrote to memory of 1612	1676	cmd.exe	33
PID 1676 wrote to memory of 1612	1676	cmd.exe	33
PID 1676 wrote to memory of 1612	1676	cmd.exe	33
PID 1676 wrote to memory of 1612	1676	cmd.exe	33
PID 1612 wrote to memory of 1668	1612	oymvn.exe	34
PID 1612 wrote to memory of 1668	1612	oymvn.exe	34
PID 1612 wrote to memory of 1668	1612	oymvn.exe	34
PID 1612 wrote to memory of 1668	1612	oymvn.exe	34

C:\Users\Admin\AppData\Local\Temp\6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe
"C:\Users\Admin\AppData\Local\Temp\6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\oymvn.exe "C:\Users\Admin\AppData\Local\Temp\6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1676
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:2392
- - C:\Users\Admin\AppData\Local\Temp\oymvn.exe
    C:\Users\Admin\AppData\Local\Temp\\oymvn.exe "C:\Users\Admin\AppData\Local\Temp\6f8291b84fbdadcca89997238b18fce934f5902fc6a8e6e69dce6ca46fdecbf6.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1612
  - - \??\c:\Program Files\impyl\gxkqzes.exe
      "c:\Program Files\impyl\gxkqzes.exe" "c:\Program Files\impyl\gxkqzes.dll",SetHandle C:\Users\Admin\AppData\Local\Temp\oymvn.exe
      4⤵
      Executes dropped EXE
      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
      PID:1668

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

Replay Monitor

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Downloads

\??\c:\Program Files\impyl\gxkqzes.dll

Filesize
128KB

MD5
c9ec87c95dc14e6fc795cd1fee1cf50f

SHA1
4ed80db374a4a94060c825b39fd3f5690eb7a276

SHA256
bd45d2f2e170855566222941f679d6ee241f4ae188980185f9eb7643f79aa292

SHA512
0ae698bc3b6a2e339a7bf6cff7cad53c73d46bbe61e2afb40af558fe8a59294bc1d184eacb3f9cec37f7b573a528ac694b4a981e8c1c90c512186be418170d75

Download Submit
\Program Files\impyl\gxkqzes.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Users\Admin\AppData\Local\Temp\oymvn.exe

Filesize
152KB

MD5
b71130385e41c88868be556d9052cee3

SHA1
4d3feb9223896433a16d92420023780938a1afdc

SHA256
9ce489b1efd8dd2796a2ac99f77fea9d14f3ab32d46fe25c4a993e12150c7e53

SHA512
811fbb6d5e24b8f5d9f448d33ee30e187c87e6333be26d2aa021da2e41be89c4a5598bc84f6c2497e68739765bc1e4a99c69d0a7b5c08f8bb12be07a99e7cb26

Download Submit
memory/1612-9-0x0000000000400000-0x000000000042F036-memory.dmp

Filesize
188KB

Download
memory/1612-15-0x0000000000400000-0x000000000042F036-memory.dmp

Filesize
188KB

Download
memory/1668-23-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/1668-24-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/1668-25-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/1668-26-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/1668-30-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/1668-33-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/1676-7-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1676-5-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2228-2-0x0000000000400000-0x000000000042F036-memory.dmp

Filesize
188KB

Download
memory/2228-0-0x0000000000400000-0x000000000042F036-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads