0f2d2120c7b358f345ac78786ee8174257a25a5bc321573bd686fb830c52f536

Analysis

max time kernel
93s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28-01-2024 05:30

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General

Target

2024-01-28_70b041d461b5711890948898d7cdfc42_cryptolocker.exe
Size

119KB
MD5

70b041d461b5711890948898d7cdfc42
SHA1

4d6ce486590b0dc2ba1cc382b335003c7a2e8dfc
SHA256

0f2d2120c7b358f345ac78786ee8174257a25a5bc321573bd686fb830c52f536
SHA512

0e4d6ec8140c46726389268b496ef6268a3f712e146e40771b09e69c40026b009ac6e83c9a71b5d388b89e03ec28a0f7469abec625fba4a1f1b1109ea29f23e4
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUSx:vCjsIOtEvwDpj5H9YvQd2a

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-01-28_70b041d461b5711890948898d7cdfc42_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1948	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 4756 wrote to memory of 1948	4756	2024-01-28_70b041d461b5711890948898d7cdfc42_cryptolocker.exe	25
PID 4756 wrote to memory of 1948	4756	2024-01-28_70b041d461b5711890948898d7cdfc42_cryptolocker.exe	25
PID 4756 wrote to memory of 1948	4756	2024-01-28_70b041d461b5711890948898d7cdfc42_cryptolocker.exe	25

C:\Users\Admin\AppData\Local\Temp\2024-01-28_70b041d461b5711890948898d7cdfc42_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_70b041d461b5711890948898d7cdfc42_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4756
- 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:1948

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
119KB

MD5
11178b6f77b8de747285177b12bf4f8c

SHA1
9fb202b9725a4e98004ea64c68431b5022e45f64

SHA256
7cb9fdb6ee1fbee0dfe76f5b60a99a984695bc95d3e4f1ae0ef4bbeb0664a50a

SHA512
123bb953d84e3f6fb8f45f4ce58a3aa60e0852b5ef0b2f469815cf019f23e4c49689cb82cd55230e2f0630e9c5dbaae48bf44d5f11f11abff8ebf4ed524aeeb6

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

Filesize
315B

MD5
a34ac19f4afae63adc5d2f7bc970c07f

SHA1
a82190fc530c265aa40a045c21770d967f4767b8

SHA256
d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

SHA512
42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

Download Submit
memory/1948-23-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1948-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4756-2-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/4756-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/4756-0-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download