86262f9743ae7de109a5509b2e11354aa7842fb201137308e3fb9b37fe4b8863

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 04:32

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General

Target

2024-04-05_a711d45d573472e492b3d5204e3e4ff1_cryptolocker.exe
Size

36KB
MD5

a711d45d573472e492b3d5204e3e4ff1
SHA1

cba08e713cb1ba094b487e2003874e73fd66fd3f
SHA256

86262f9743ae7de109a5509b2e11354aa7842fb201137308e3fb9b37fe4b8863
SHA512

0608ea2ffa33937ec19401965bc8690070ca40c4943bef5b09901377e339f2f8dd687da733ae2ea87653ecd380dca103558140cbe875bf60967eb47c7a18c38c
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLyn:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/1248-2-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001225d-11.dat	CryptoLocker_rule2
behavioral1/memory/2208-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1248-2-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001225d-11.dat	CryptoLocker_set1
behavioral1/memory/2208-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2208	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1248	2024-04-05_a711d45d573472e492b3d5204e3e4ff1_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 1248 wrote to memory of 2208	1248	2024-04-05_a711d45d573472e492b3d5204e3e4ff1_cryptolocker.exe	28
PID 1248 wrote to memory of 2208	1248	2024-04-05_a711d45d573472e492b3d5204e3e4ff1_cryptolocker.exe	28
PID 1248 wrote to memory of 2208	1248	2024-04-05_a711d45d573472e492b3d5204e3e4ff1_cryptolocker.exe	28
PID 1248 wrote to memory of 2208	1248	2024-04-05_a711d45d573472e492b3d5204e3e4ff1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_a711d45d573472e492b3d5204e3e4ff1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_a711d45d573472e492b3d5204e3e4ff1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2208

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
36KB

MD5
b08bb93e64d7eb92c8b2831f51910d5a

SHA1
8eb2ddfe5a93dbc61a0440e370b50ecf2195c551

SHA256
5479e582cfbcd0e8843d9483d3e532769bf83b329f98723d7bd910e306c621ef

SHA512
6ba9bad540b811bb34ef6be72cf64d4e96fba4fd8c046f9b071d169a8990847139098d7c25d380000c5e88fa92057edd600faff78cd788c58b9c5870943ad7f8

Download Submit
memory/1248-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1248-2-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1248-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1248-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2208-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2208-17-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2208-20-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download