d6dc3727e7d6fa2efcc5729c9836cc8dc9f063cc9c503e4a91ec1bfb234ae793

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
04-05-2024 04:35

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General

Target

2024-05-04_472c911620338af64c814ca6f8e6d7f2_cryptolocker.exe
Size

63KB
MD5

472c911620338af64c814ca6f8e6d7f2
SHA1

ac7ad5ce215ea8678e5c51168280457d69a66d28
SHA256

d6dc3727e7d6fa2efcc5729c9836cc8dc9f063cc9c503e4a91ec1bfb234ae793
SHA512

f824f10030116b8332458673d986c53efaec808b2c6dee926e2af99a778891eecd386e7272c15cf21d18bc8fa78570863389bd30071a1edeb7422d8068e76798
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiA:BbdDmjr+OtEvwDpjM85

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1972-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000016176-11.dat	CryptoLocker_rule2
behavioral1/memory/2212-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2212-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1972-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2212-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1972-8-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000016176-11.dat	UPX
behavioral1/memory/2212-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2212-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2212	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1972	2024-05-04_472c911620338af64c814ca6f8e6d7f2_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 2212	1972	2024-05-04_472c911620338af64c814ca6f8e6d7f2_cryptolocker.exe	28
PID 1972 wrote to memory of 2212	1972	2024-05-04_472c911620338af64c814ca6f8e6d7f2_cryptolocker.exe	28
PID 1972 wrote to memory of 2212	1972	2024-05-04_472c911620338af64c814ca6f8e6d7f2_cryptolocker.exe	28
PID 1972 wrote to memory of 2212	1972	2024-05-04_472c911620338af64c814ca6f8e6d7f2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-04_472c911620338af64c814ca6f8e6d7f2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_472c911620338af64c814ca6f8e6d7f2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2212

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\asih.exe

Filesize
64KB

MD5
cc4318055a13a2cc314255f0ddfa97da

SHA1
6e6b8c9fd5922d443166b07e0275f9e3d8bd92ad

SHA256
490f6f50ec13d3d41e285a22779f9e8ea5546c63be26ca12210137da1da619d5

SHA512
e741f2df0f190fffa5e0ee715a797cf7c4efc9ed9e07f7f1e556b29f4568caddbebcd39c550c896ece0bd91e67fb71d3ce9d8effd2d7c99d7d527738ac5e5ec6

Download Submit
memory/1972-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1972-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1972-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1972-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2212-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2212-25-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2212-18-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2212-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download