b1d3f1447461046ee4a2e7d827c04da36698cece7c89e1873b1f06bc3d7e0719

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/02/2024, 19:28

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General

Target

2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe
Size

37KB
MD5

4678e4192465e995a455ab82ac5d7d66
SHA1

7f55fcf4a1a37bb9927724c2de100ee6f28d6a9e
SHA256

b1d3f1447461046ee4a2e7d827c04da36698cece7c89e1873b1f06bc3d7e0719
SHA512

88319c36781a73bee938fc84565470373766875198cc54202509f7ac40fbb7bdf183001984940705e6845728cc2945b34863c22f5952a4346223bbae6f70c404
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXuni8LBE1:btB9g/WItCSsAGjX7e9N0hunLS1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001225a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2696	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2640	2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe

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
2640	2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe
2696	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 2696	2640	2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe	28
PID 2640 wrote to memory of 2696	2640	2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe	28
PID 2640 wrote to memory of 2696	2640	2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe	28
PID 2640 wrote to memory of 2696	2640	2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_4678e4192465e995a455ab82ac5d7d66_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2640
- 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:2696

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
37KB

MD5
fc18d08e5b19ef5e1089a341de4640de

SHA1
90fb846c24a9fe39007b5d568a89adddfc329d2b

SHA256
a15cc977704dbc7316e044850f9f45ef0d2705090492829646605705fa2be9d1

SHA512
d6a959ff2193ab528d808444caf0db741f10f11b344ce590a4b7da6db6a865ab96b00700a34bb623588025395d96827d270dc750e18ea0b2d5f4ec5f7084d72d

Download Submit
memory/2640-0-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2640-1-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2640-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2696-17-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download