e958b8c7e11b58dcdb3af8deafa15e6d041e6da5fd0e5a171c718a72593c9158

Analysis

max time kernel
150s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/02/2024, 08:38

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General

Target

a3581433f0ff4f948ddcccbe141f02be.exe
Size

10KB
MD5

a3581433f0ff4f948ddcccbe141f02be
SHA1

fa93ee06763d10a81cd1d768f76d31bd8ed7a866
SHA256

e958b8c7e11b58dcdb3af8deafa15e6d041e6da5fd0e5a171c718a72593c9158
SHA512

1cbafb20f5885d6523ed0c24cce931161d6affab3e9ab00ce155bc7d061522eac25fc4564bbd3972253dfb950e98ebbb4991c70b53f540c0b865d36dbc5c3dc3
SSDEEP

192:gIysA/4ZJDPuuxDQNQ2spwlqZif/R/J9a+GGzDxlJAiYFhyArDg+:gIysAwZJWNNvVqZkRjNDDxlKiYFgArs+

Score

8^/10

persistence upx

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Deletes itself 1 IoCs

pid	Process
2560	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2744	mpacklk.exe

Loads dropped DLL 2 IoCs

pid	Process
2224	a3581433f0ff4f948ddcccbe141f02be.exe
2224	a3581433f0ff4f948ddcccbe141f02be.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2224-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/files/0x00040000000130fc-3.dat	upx
behavioral1/memory/2224-4-0x00000000001B0000-0x00000000001BF000-memory.dmp	upx
behavioral1/memory/2224-11-0x00000000001B0000-0x00000000001BF000-memory.dmp	upx
behavioral1/memory/2744-12-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/2224-20-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\mpacklk.exe	a3581433f0ff4f948ddcccbe141f02be.exe
File opened for modification	C:\Windows\SysWOW64\mpacklk.exe	a3581433f0ff4f948ddcccbe141f02be.exe
File created	C:\Windows\SysWOW64\mpackl.dll	a3581433f0ff4f948ddcccbe141f02be.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2224	a3581433f0ff4f948ddcccbe141f02be.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2744	2224	a3581433f0ff4f948ddcccbe141f02be.exe	28
PID 2224 wrote to memory of 2744	2224	a3581433f0ff4f948ddcccbe141f02be.exe	28
PID 2224 wrote to memory of 2744	2224	a3581433f0ff4f948ddcccbe141f02be.exe	28
PID 2224 wrote to memory of 2744	2224	a3581433f0ff4f948ddcccbe141f02be.exe	28
PID 2224 wrote to memory of 2560	2224	a3581433f0ff4f948ddcccbe141f02be.exe	29
PID 2224 wrote to memory of 2560	2224	a3581433f0ff4f948ddcccbe141f02be.exe	29
PID 2224 wrote to memory of 2560	2224	a3581433f0ff4f948ddcccbe141f02be.exe	29
PID 2224 wrote to memory of 2560	2224	a3581433f0ff4f948ddcccbe141f02be.exe	29

C:\Users\Admin\AppData\Local\Temp\a3581433f0ff4f948ddcccbe141f02be.exe
"C:\Users\Admin\AppData\Local\Temp\a3581433f0ff4f948ddcccbe141f02be.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\mpacklk.exe
  C:\Windows\system32\mpacklk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:2744
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\a3581433f0ff4f948ddcccbe141f02be.exe.bat
  2⤵
  - Deletes itself
  PID:2560

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\a3581433f0ff4f948ddcccbe141f02be.exe.bat

Filesize
182B

MD5
54d2fc85b7281673f229309f332dbb1a

SHA1
20f6bb3c50d31522fee82ce85ca3b7b609322d73

SHA256
166a97f077deb419566d7c416622df81a4abf3a5f73d00f66d340c5ca75c78c6

SHA512
e1edac5cd5ad39c9ca20141f74ef76c5898d8a509854171a70282e5753d5e5e0df7601071c7cbe592b4e64140b31be8438e4174dfa95d02e274b00f0cafaa332

Download Submit
\Windows\SysWOW64\mpacklk.exe

Filesize
10KB

MD5
a3581433f0ff4f948ddcccbe141f02be

SHA1
fa93ee06763d10a81cd1d768f76d31bd8ed7a866

SHA256
e958b8c7e11b58dcdb3af8deafa15e6d041e6da5fd0e5a171c718a72593c9158

SHA512
1cbafb20f5885d6523ed0c24cce931161d6affab3e9ab00ce155bc7d061522eac25fc4564bbd3972253dfb950e98ebbb4991c70b53f540c0b865d36dbc5c3dc3

Download Submit
memory/2224-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2224-4-0x00000000001B0000-0x00000000001BF000-memory.dmp

Filesize
60KB

Download
memory/2224-11-0x00000000001B0000-0x00000000001BF000-memory.dmp

Filesize
60KB

Download
memory/2224-20-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2744-12-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download