356d95c43f008afc0dd3b5f41f5e52ede4521fcd25f24f549da6c4d93c5ae791

Analysis

max time kernel
118s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 05:38

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General

Target

20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe
Size

55KB
MD5

cee573bb7d20f64f1ee1ad2bb6531292
SHA1

55b99ae8673bee3e4214813da11a8a0d290a9a1b
SHA256

356d95c43f008afc0dd3b5f41f5e52ede4521fcd25f24f549da6c4d93c5ae791
SHA512

fcff899b94715118ed0a45ef76ce1a9f9466a97814332491a331a0df2040a4b3e9efd170ae1c5df1db45c462d9c1a2bbccb98d3a7ff8e7e0c4e93e3fb69aae17
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl0:bP9g/xtCS3Dxx0H

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3040	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2352	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2352-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000c000000014228-11.dat	upx
behavioral1/memory/3040-16-0x0000000000400000-0x000000000040E000-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 UnmapMainImage 2 IoCs

pid	Process
2352	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe
3040	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 3040	2352	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe	28
PID 2352 wrote to memory of 3040	2352	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe	28
PID 2352 wrote to memory of 3040	2352	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe	28
PID 2352 wrote to memory of 3040	2352	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3040

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

Replay Monitor

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Downloads

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

Filesize
56KB

MD5
c2286e098815debab772f61b42a1ba49

SHA1
c0372ae7d3c090d3f7e70847f9f8b2efc9d05880

SHA256
4fa9347f6deae2d8354da42cf8221ebb05048ae945fa91018dc310611045eb7a

SHA512
ed134b4d95dc4b52a62e78fd09fbc9df22f179721ab9bc2eeed2ab6f24b43c78f1a271cb4c2855323ba90d9818ea4cf949ba767c8a713906e4458b9f685165f7

Download Submit
memory/2352-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2352-9-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/2352-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2352-1-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/3040-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3040-25-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download