9224b4e8179cfe9b694c62ba67efdd0578dba4b8a616899598338bf0a36acd48

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06-06-2024 21:30

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General

Target

2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe
Size

58KB
MD5

893f4728c57abe52bd6ed334463de1dc
SHA1

8ab6ba6660ac33f507159b68d1a1e47091f5960e
SHA256

9224b4e8179cfe9b694c62ba67efdd0578dba4b8a616899598338bf0a36acd48
SHA512

3767fb30bf790a50df8dacd6096f3514f7e1da734848e0daff44f3603e861218c6c13f0fbc0ce67f8bbe218ebb1a6d8b80398819ec4ddeebc130596cb017a522
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlggG:bP9g/xtCS3Dxx0R

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/2156-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000153cf-11.dat	CryptoLocker_rule2
behavioral1/memory/2156-12-0x0000000000530000-0x000000000053E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/2156-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/files/0x000d0000000153cf-11.dat	UPX
behavioral1/memory/2156-12-0x0000000000530000-0x000000000053E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2508	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2156	2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2156-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000d0000000153cf-11.dat	upx
behavioral1/memory/2156-12-0x0000000000530000-0x000000000053E000-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
2156	2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe
2508	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2508	2156	2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe	28
PID 2156 wrote to memory of 2508	2156	2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe	28
PID 2156 wrote to memory of 2508	2156	2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe	28
PID 2156 wrote to memory of 2508	2156	2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_893f4728c57abe52bd6ed334463de1dc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2156
- 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:2508

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
58KB

MD5
91800265b4e4f7cbfff818570707bb16

SHA1
ec2a71ebb6622ca183eaee93825071351bb1b6b3

SHA256
962d11682962616a0770f73a8d0178d0c8c16b00bd6db9522ac7ac042642f8ca

SHA512
ee4cec7bfef2314b130a1cd768526fd6ed54b495203cd9eddd444072bdd70bc20975ff494408695d0a2446391ed855401b1ad692bd03c71a8393619f58245afb

Download Submit
memory/2156-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2156-1-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2156-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2156-9-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2156-12-0x0000000000530000-0x000000000053E000-memory.dmp

Filesize
56KB

Download
memory/2508-25-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download