6f07e2d804847895b891626ebb404358e1b2d8ce594de164b678167172c53f26

Analysis

max time kernel
0s
max time network
126s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
10/06/2024, 05:47

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General

Target

2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe
Size

57KB
MD5

6028ef7603bd0837984aff733e5f96f8
SHA1

479c86f6ddf85d8b8267cebbfe253a5c24052ece
SHA256

6f07e2d804847895b891626ebb404358e1b2d8ce594de164b678167172c53f26
SHA512

c4aeaea3a0cd9b3ca3690f94d715de975eb65fba5a078de845d56bffd2020d1c8d117c72d29ced30e2f46450ca9fc661390ba36b47a3dbf7a59297b7d777be2b
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlj:bP9g/xtCS3Dxx0A

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001227b-24.dat	CryptoLocker_rule2
behavioral1/memory/3020-17-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2380-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001227b-24.dat	UPX
behavioral1/memory/3020-17-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/memory/2380-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3020	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2380	2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c00000001227b-24.dat	upx
behavioral1/memory/3020-17-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/memory/2380-0-0x0000000000400000-0x000000000040E000-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
2380	2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe
3020	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 3020	2380	2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe	28
PID 2380 wrote to memory of 3020	2380	2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe	28
PID 2380 wrote to memory of 3020	2380	2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe	28
PID 2380 wrote to memory of 3020	2380	2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_6028ef7603bd0837984aff733e5f96f8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2380
- 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:3020

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

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

Filesize
57KB

MD5
e0ff9e5aead0ea4231b71d9f5e4e636b

SHA1
bad74b1fe3d1a8816a8c7ac12806701e1b104022

SHA256
4d6edd2ee05ffd9f0d68103e8083dbc69a16b39099a290c38df2386a0f25c66e

SHA512
f7fad8c3cfc3676efec992dea0900e1f522fde6b31791d2742a5ee91ddd69b396d1205d6f765542209b9144ef8fca5312de207045f4467c3f35c1b88d647c0d0

Download Submit
memory/2380-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2380-9-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2380-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2380-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3020-25-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/3020-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download