7fee6db599bdc55d600da75e6c2ebca5a6bd754405dd119f785cc3e94137a500

Analysis

max time kernel
149s
max time network
147s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/12/2023, 22:34

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General

Target

05bb1cd74be52b3a6023dc450ae9c6a9.exe
Size

365KB
MD5

05bb1cd74be52b3a6023dc450ae9c6a9
SHA1

4f651c51f70fae5d36f1e40c4d385e310531528a
SHA256

7fee6db599bdc55d600da75e6c2ebca5a6bd754405dd119f785cc3e94137a500
SHA512

8a6d7aa3903a619ba27f4b9f11967a425da4e2d20cc02022570068cc3c298999774f46a46ee76749577b4335634bc03ffea12ae43187283db9b46b30a197ddc9
SSDEEP

6144:5FQvx0NXgEJL8kTvI/qFUmZQab7T5kaRJMggJEEVlRbkSD+WyWIaNmp:5FQvC+EJVTU5OQdaRag4ESluSDj3q

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\ProgramData\\nJ31622KeOlP31622\\nJ31622KeOlP31622.exe"	05bb1cd74be52b3a6023dc450ae9c6a9.exe

Deletes itself 1 IoCs

pid	Process
772	nJ31622KeOlP31622.exe

Executes dropped EXE 1 IoCs

pid	Process
772	nJ31622KeOlP31622.exe

Loads dropped DLL 2 IoCs

pid	Process
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2316-0-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral1/memory/2316-2-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral1/memory/2316-4-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral1/memory/2316-13-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral1/memory/2316-37-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral1/memory/772-36-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral1/memory/772-43-0x0000000000400000-0x00000000004D1000-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-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\nJ31622KeOlP31622 = "C:\\ProgramData\\nJ31622KeOlP31622\\nJ31622KeOlP31622.exe"	nJ31622KeOlP31622.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe
Token: SeDebugPrivilege	772	nJ31622KeOlP31622.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 772	2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe	32
PID 2316 wrote to memory of 772	2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe	32
PID 2316 wrote to memory of 772	2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe	32
PID 2316 wrote to memory of 772	2316	05bb1cd74be52b3a6023dc450ae9c6a9.exe	32

C:\Users\Admin\AppData\Local\Temp\05bb1cd74be52b3a6023dc450ae9c6a9.exe
"C:\Users\Admin\AppData\Local\Temp\05bb1cd74be52b3a6023dc450ae9c6a9.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2316
- C:\ProgramData\nJ31622KeOlP31622\nJ31622KeOlP31622.exe
  "C:\ProgramData\nJ31622KeOlP31622\nJ31622KeOlP31622.exe" "C:\Users\Admin\AppData\Local\Temp\05bb1cd74be52b3a6023dc450ae9c6a9.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:772

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\nJ31622KeOlP31622\nJ31622KeOlP31622

Filesize
208B

MD5
5914839c216fce058bd09f2a1daf5094

SHA1
729e9af7f66492be08044b3085b1f4b1ebbe940c

SHA256
dcc6d98bbfb2febf387015d0df9c59d05f9006a885d64989cc9fd30f8368c5d2

SHA512
e4338ed0fb93ec5f189ebc715942611e9c1662c1abc23911778b4bc098af8dbb0815bd74a3376839269f3f46fde8822d220561aa636452c5973f7b24325e26d8

Download Submit
\ProgramData\nJ31622KeOlP31622\nJ31622KeOlP31622.exe

Filesize
365KB

MD5
eef1091099e8e7ade9b1afc31d6c3939

SHA1
7d285b00be4a7ff31c62f66dc9169b1b48ac9279

SHA256
5347f355faf9997b7971c6b66547d510f65ff9cb925e4520ca66fc08aa892c31

SHA512
007b36102336c1fd2608ee6f6723d4a6bcc5fa7a62127f7b69f48258a2a4dec0f06ca69a64543a1222de508a35cb09d2e1f411f268ce613f889f3bb3e8867e62

Download Submit
memory/772-36-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/772-43-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2316-1-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2316-0-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2316-2-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2316-4-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2316-3-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2316-13-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2316-37-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download