f107b4fba77dea5a9448a3c6521186ba6e24bc7f8cf3011cfbff52d430912f42

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/06/2024, 03:48

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General

Target

2024-06-05_b4b9947ead8ed33c123a4b826978ac9b_cryptolocker.exe
Size

37KB
MD5

b4b9947ead8ed33c123a4b826978ac9b
SHA1

82a5e709e3b1278e927c23be17a595dde8e92193
SHA256

f107b4fba77dea5a9448a3c6521186ba6e24bc7f8cf3011cfbff52d430912f42
SHA512

1f328f8a8ba3a7e84f48acede3e9e769618b079e81c6a13695fb2703699c8557b6f8ae15dc65e646a2ff07c869d51766fc80dd555a5d44d1ad4c482138291750
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLZ:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2528-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000014708-11.dat	CryptoLocker_rule2
behavioral1/memory/2528-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2392-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2528-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000014708-11.dat	CryptoLocker_set1
behavioral1/memory/2528-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2392-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2392	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2528	2024-06-05_b4b9947ead8ed33c123a4b826978ac9b_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 2528 wrote to memory of 2392	2528	2024-06-05_b4b9947ead8ed33c123a4b826978ac9b_cryptolocker.exe	28
PID 2528 wrote to memory of 2392	2528	2024-06-05_b4b9947ead8ed33c123a4b826978ac9b_cryptolocker.exe	28
PID 2528 wrote to memory of 2392	2528	2024-06-05_b4b9947ead8ed33c123a4b826978ac9b_cryptolocker.exe	28
PID 2528 wrote to memory of 2392	2528	2024-06-05_b4b9947ead8ed33c123a4b826978ac9b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-05_b4b9947ead8ed33c123a4b826978ac9b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_b4b9947ead8ed33c123a4b826978ac9b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2392

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
37KB

MD5
a3b7f5f4b513274446682330907dd0ce

SHA1
fc9ba6c01ad38426ebc1353f573fde436e79bc97

SHA256
c882c78eeb3194972141c719bb419479b35d86735409bc1a16ff274b75c4656c

SHA512
9355380af290250790029cb49bae28ff8a7e617ae684d81aa94e6b0663c42587393fd448afd976dced6be079a846b817d33e58e789eece0c54d1cdad647fbc0b

Download Submit
memory/2392-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2392-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2392-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2528-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2528-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2528-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2528-9-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2528-14-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download