129bf6a6f5a56181ba7ea3694d586afe232c7f2489a19b5250db2b45c63f6337

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17/05/2024, 17:11

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General

Target

20240517c7434773e06eeace3b0efcfd160a6117cryptolocker.exe
Size

88KB
MD5

c7434773e06eeace3b0efcfd160a6117
SHA1

432f0e3fdf168b6c75a7656ff21208f4c0fc32ac
SHA256

129bf6a6f5a56181ba7ea3694d586afe232c7f2489a19b5250db2b45c63f6337
SHA512

eb33644b8d0581ff0ae7561200029bfb69fd0c5459df1eb97165c65e6973f53338a02fb9c2204eb57b76320759d35e50e2390cf5dcf2d229b769417f862acf92
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIODw:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgK

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2936	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1760	20240517c7434773e06eeace3b0efcfd160a6117cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1760-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000b000000014b6d-11.dat	upx
behavioral1/memory/1760-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2936-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2936-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2936	1760	20240517c7434773e06eeace3b0efcfd160a6117cryptolocker.exe	28
PID 1760 wrote to memory of 2936	1760	20240517c7434773e06eeace3b0efcfd160a6117cryptolocker.exe	28
PID 1760 wrote to memory of 2936	1760	20240517c7434773e06eeace3b0efcfd160a6117cryptolocker.exe	28
PID 1760 wrote to memory of 2936	1760	20240517c7434773e06eeace3b0efcfd160a6117cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\20240517c7434773e06eeace3b0efcfd160a6117cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240517c7434773e06eeace3b0efcfd160a6117cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
88KB

MD5
72b0cf01b7abc10793476220c6531c64

SHA1
c1a744401e524d911bcfcb6e66ae67d1e817fbad

SHA256
c5de0602adb1e770bb1a25062370b18dcfac1bc50c6424027926f80b77957714

SHA512
4cf2ef2b2dceee5223b763c3770d5801da54fba9c45f122d96a7d3280b0c970682dc7505f67248168dd36f2b8b0763137771ef132da0ed11c342c380f7a093f8

Download Submit
memory/1760-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1760-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1760-2-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/1760-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1760-13-0x0000000001EA0000-0x0000000001EAF000-memory.dmp

Filesize
60KB

Download
memory/1760-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2936-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2936-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2936-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2936-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download