a04324e71ed0850bc46b68e3910ec9d3209d3b0e082ce87028226308a020ca4f

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 23:49

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General

Target

2024-03-14_b6b08aff7936b840b75ddcf416ebbb74_cryptolocker.exe
Size

54KB
MD5

b6b08aff7936b840b75ddcf416ebbb74
SHA1

5f7c21cb496a30a3495f26922819bb31ef8316d5
SHA256

a04324e71ed0850bc46b68e3910ec9d3209d3b0e082ce87028226308a020ca4f
SHA512

56c4dbcbc5bbb589867b155bc8dd567b6f72689a9b357330953c0955c86d3f481e8947170369308a635a356c27801d22fd4af138cbb935234498c7d5ea3dc1e8
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCW1nw71TkhsiPn1YFv6dy/wXpNP:vj+jsMQMOtEvwDpj5HH1nw73KOFSj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023039-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023039-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-14_b6b08aff7936b840b75ddcf416ebbb74_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3036	misid.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 3036	1116	2024-03-14_b6b08aff7936b840b75ddcf416ebbb74_cryptolocker.exe	85
PID 1116 wrote to memory of 3036	1116	2024-03-14_b6b08aff7936b840b75ddcf416ebbb74_cryptolocker.exe	85
PID 1116 wrote to memory of 3036	1116	2024-03-14_b6b08aff7936b840b75ddcf416ebbb74_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-14_b6b08aff7936b840b75ddcf416ebbb74_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_b6b08aff7936b840b75ddcf416ebbb74_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
54KB

MD5
00a6e9f047437b6b4a1c268ae555df8d

SHA1
7101f87a82f47b22b87366d5e850d9c535fb491c

SHA256
98b928d08176425ec7db36f7f15eec17643a3a94392a73c7c958869eeabc8253

SHA512
c552bc4e5d989f1f576c02052e3d9de05b8373e30b2a1c8d6210af382cc767503908e38c1e79f68ce8c2f7f2ac33b517aab979351b81c3a2476329c8abe44d4f

Download Submit
memory/1116-0-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/1116-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/1116-2-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/3036-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3036-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download