d5b052691ff85e28dbd060e86b1aa5d35046c386ac120c22d9735e042babaced

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 02:29

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General

Target

2024-04-27_c9591ec311f685c867ede5a01ff64bbc_cryptolocker.exe
Size

31KB
MD5

c9591ec311f685c867ede5a01ff64bbc
SHA1

85095dae698f0c7650f8f2513ca3581cfc02e4fc
SHA256

d5b052691ff85e28dbd060e86b1aa5d35046c386ac120c22d9735e042babaced
SHA512

3453b64fec647119834383f1961d698559d1b43ce03900d28bcf03212002cd6e6052b331c53e62b1c24432408f3da07cc2a644febf90ee6a788d176a0528ab77
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGo:bG74zYcgT/Ekd0ryfj5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2784-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012324-11.dat	CryptoLocker_rule2
behavioral1/memory/2784-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1296-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1296-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1296	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	2024-04-27_c9591ec311f685c867ede5a01ff64bbc_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 2784 wrote to memory of 1296	2784	2024-04-27_c9591ec311f685c867ede5a01ff64bbc_cryptolocker.exe	28
PID 2784 wrote to memory of 1296	2784	2024-04-27_c9591ec311f685c867ede5a01ff64bbc_cryptolocker.exe	28
PID 2784 wrote to memory of 1296	2784	2024-04-27_c9591ec311f685c867ede5a01ff64bbc_cryptolocker.exe	28
PID 2784 wrote to memory of 1296	2784	2024-04-27_c9591ec311f685c867ede5a01ff64bbc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_c9591ec311f685c867ede5a01ff64bbc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_c9591ec311f685c867ede5a01ff64bbc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1296

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\hasfj.exe

Filesize
31KB

MD5
c1198a6d02394ece6715fdfb3461f042

SHA1
4f8cea12b166ff31c69ec3e1d746ffdf1e6f6314

SHA256
6f740912424f441604ad72029c74367544b8603849aed4999b98f1f42d9e9c25

SHA512
39ae1e7e268c4e95f4a20d5842e3f1aed4191bdb12313f6ea096d64ad0c4a33c3c82bfe6d0e0b015a19d4059d3f230b4e6422dc0386f411dc482c64e051ca771

Download Submit
memory/1296-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1296-18-0x0000000002D00000-0x0000000002D06000-memory.dmp

Filesize
24KB

Download
memory/1296-25-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/1296-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2784-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2784-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2784-2-0x0000000001CB0000-0x0000000001CB6000-memory.dmp

Filesize
24KB

Download
memory/2784-9-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2784-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download