45bca17967e9cb36484ad00d76906e53f25340463d440403314374a0380c170f

Analysis

max time kernel
89s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 12:42

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General

Target

2024-02-04_c09738e752cf6438fd07bbf4ad91632e_cryptolocker.exe
Size

77KB
MD5

c09738e752cf6438fd07bbf4ad91632e
SHA1

aca6f67443f4f48dae756eb74df9949a0a2be9cc
SHA256

45bca17967e9cb36484ad00d76906e53f25340463d440403314374a0380c170f
SHA512

f54f1cbcd4c6a3e4b04e2db763071abb4269c6d697d1ad365049207455a6dae8182b4049565191248395c163e5fe58741189810c001b14fac2b14fcba5427f41
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNO:vCjsIOtEvwDpj5H9YvQd2M

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-04_c09738e752cf6438fd07bbf4ad91632e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2884	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 2876 wrote to memory of 2884	2876	2024-02-04_c09738e752cf6438fd07bbf4ad91632e_cryptolocker.exe	88
PID 2876 wrote to memory of 2884	2876	2024-02-04_c09738e752cf6438fd07bbf4ad91632e_cryptolocker.exe	88
PID 2876 wrote to memory of 2884	2876	2024-02-04_c09738e752cf6438fd07bbf4ad91632e_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-04_c09738e752cf6438fd07bbf4ad91632e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_c09738e752cf6438fd07bbf4ad91632e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2884

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

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Downloads

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

Filesize
78KB

MD5
d9f6d58f8c551bde8ee0055357d750b3

SHA1
fcc4f1114a2a3ef3f4b32b69b67a8a65775c7df6

SHA256
48462abab79ec77d5f5baeb2b763a719a04fe02b6c64c8d4295c6c629f307598

SHA512
ef4fb3b451c8ac28399f97d76fa744d438fba0ae6e2ed956ee43def877331fbcc6412e5f93c34489dc9c05e7d27b9b2384a65e76512b21cbc8e608386726599e

Download Submit
memory/2876-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2876-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2876-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2884-17-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/2884-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download