1b5df1845acce3e0d0fb5bd30def2bda35aebcdbff9e49c64059ab5ae7f372fa

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16-03-2024 10:02

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General

Target

2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe
Size

54KB
MD5

f183266513a429c4e265d1d453b34f01
SHA1

207785ad0d6444822da33e98157858788d891065
SHA256

1b5df1845acce3e0d0fb5bd30def2bda35aebcdbff9e49c64059ab5ae7f372fa
SHA512

26cce68533391ed9f74fef4fd9e12424d7f2a1287ad6847d1bcca7c5da908c83a235b621db0fc2ee94c489b75ce4812fc198f6fd7797d404686a8af0adfaa133
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdMduYZ:79mqyNhQMOtEvwDpjBPY7xv3g8ZdtZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1724-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001227e-11.dat	CryptoLocker_rule2
behavioral1/memory/1724-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2872-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1724-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001227e-11.dat	CryptoLocker_set1
behavioral1/memory/1724-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2872-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2872	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1724	2024-03-16_f183266513a429c4e265d1d453b34f01_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 1724 wrote to memory of 2872	1724	2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe	28
PID 1724 wrote to memory of 2872	1724	2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe	28
PID 1724 wrote to memory of 2872	1724	2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe	28
PID 1724 wrote to memory of 2872	1724	2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2872

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
55KB

MD5
7a4ab3fcf2c949077fe4d10642c2e4c6

SHA1
4c0d8cc80eb3e9ba5cf690a4bc9de4d7f66c3175

SHA256
fb260dc720668b39baa25cbe07866a354a9636b009b07845d927adc1def62cc7

SHA512
404f3c54c0c6199fd57f467730f527dbdcefd488105f3c0b2877dd805c82b302cc4903cd207261eda8f84436ff7d606c97eae4060bb3401959871471d2f9262d

Download Submit
memory/1724-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1724-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1724-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1724-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1724-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1724-14-0x0000000001EF0000-0x0000000001EFF000-memory.dmp

Filesize
60KB

Download
memory/2872-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2872-19-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2872-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download