3a0a30b10431865527211be80ad188210d24f01b9c3693371b5c6e8138ff9da0

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/05/2024, 04:31

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General

Target

2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe
Size

56KB
MD5

6eba491c9f44a8bfa4eaa76def8209d4
SHA1

6f17030f7ac83cede8a2521f5951d2fee7a4e606
SHA256

3a0a30b10431865527211be80ad188210d24f01b9c3693371b5c6e8138ff9da0
SHA512

0ffdbc81eb690724dd90b93aa1ae6f698e14d2511bed637492fe8f9a8885bdb5302aa671232bd5b29b5a6875bb72055f5a580bb2ec44e37565e0cca3250755bf
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlL:bP9g/xtCS3Dxx0Y

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/2008-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001231a-11.dat	CryptoLocker_rule2
behavioral1/memory/2748-16-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/2008-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/files/0x000d00000001231a-11.dat	UPX
behavioral1/memory/2748-16-0x0000000000400000-0x000000000040E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2748	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2008	2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2008-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000d00000001231a-11.dat	upx
behavioral1/memory/2748-16-0x0000000000400000-0x000000000040E000-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
2008	2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe
2748	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 2748	2008	2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe	28
PID 2008 wrote to memory of 2748	2008	2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe	28
PID 2008 wrote to memory of 2748	2008	2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe	28
PID 2008 wrote to memory of 2748	2008	2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_6eba491c9f44a8bfa4eaa76def8209d4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2008
- 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:2748

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
7a6e26434763c0d25bf256ab45e44438

SHA1
01114567b1e4b7e45ba33f8d3d861526bd157930

SHA256
4692517856668b54f1d0568a9c8119357897263704bf72386316d99aa0afee1b

SHA512
782cdac755a7ae1b6a0cad384d4648045bfc4e01ee307fa0fd83f7de6cc6faa9a778e58e8df7334d69d632b99a7737451fa670b9252a52fe52ec680ef0bcd2ac

Download Submit
memory/2008-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2008-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2008-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2008-9-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2748-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2748-25-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download