dc2cf4b1062c0dea3d5023224b704358a0b2ccc27b76f84b955102a68792d95e

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
26-01-2024 00:36

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General

Target

2024-01-26_82b26f80ff506445b1f6b96fcdc87208_cryptolocker.exe
Size

35KB
MD5

82b26f80ff506445b1f6b96fcdc87208
SHA1

986bd08249fa94a46113de815b4d8312358044d5
SHA256

dc2cf4b1062c0dea3d5023224b704358a0b2ccc27b76f84b955102a68792d95e
SHA512

b687e417767037bcc3271117cfc76dfa7cc0eae67938bec3c3fdbe7e2232cecef6c45ef008e536843d19893db1979f2b37a1f174a7a14cd980107f200f5abbf1
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLu:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/888-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000f000000023163-13.dat	CryptoLocker_rule2
behavioral2/memory/888-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000f000000023163-16.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/888-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000f000000023163-13.dat	CryptoLocker_set1
behavioral2/memory/888-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000f000000023163-16.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	2024-01-26_82b26f80ff506445b1f6b96fcdc87208_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
368	asih.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 888 wrote to memory of 368	888	2024-01-26_82b26f80ff506445b1f6b96fcdc87208_cryptolocker.exe	21
PID 888 wrote to memory of 368	888	2024-01-26_82b26f80ff506445b1f6b96fcdc87208_cryptolocker.exe	21
PID 888 wrote to memory of 368	888	2024-01-26_82b26f80ff506445b1f6b96fcdc87208_cryptolocker.exe	21

C:\Users\Admin\AppData\Local\Temp\2024-01-26_82b26f80ff506445b1f6b96fcdc87208_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_82b26f80ff506445b1f6b96fcdc87208_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:888
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:368

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\asih.exe

Filesize
36KB

MD5
22dc8278cd762af1cf213cff0cf4981b

SHA1
d2d2c2f4c84877ecdba883b0a6529bb3d3da5164

SHA256
4f19630f7a3b917e48fa792de707b3de1cbedfa631c2198e7661aa7a38d889c3

SHA512
1f36318f3d18c7d3fd184e501767ac41ea83e27682f85b9ae707fcf9389bf52dd3f15b682def68469111d065564b16a1a06120e7ffbe7f2c10775dacb654e0a0

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
10KB

MD5
6ef4da19052e492deb0c14622a1e9a69

SHA1
04009b381bf9c746625e70f6385a50ae36c82945

SHA256
2313b9e5b4d4d87728ec17fb18bd8f1a24c7471a5bd9aa2a76a83276883adfeb

SHA512
10a4ccd96346512090998bf01cdd9672ff118f1e108279cdb17dec95f48fde25e8ca3d36b3b23a3f9508817d864b67a7ec3b7c5a42d4def37613f35fbef9f96c

Download Submit
memory/368-19-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/368-24-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/888-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/888-3-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/888-2-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/888-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/888-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download