30de0c8ecfabe15d96fe1ebd6c689ebb17d768a91ebc540bb12ee6c1d442c486

Analysis

max time kernel
145s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 10:09

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General

Target

2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe
Size

50KB
MD5

bbcfa420393ba88747997001a324df66
SHA1

364e5054cd41970d434681b167534fd8ceaa137e
SHA256

30de0c8ecfabe15d96fe1ebd6c689ebb17d768a91ebc540bb12ee6c1d442c486
SHA512

c30653bdb2956356e3944751a45dab065b3dab236baa6a0727ff4b7da5ef56fcdc133adf3799aa6f61171e50c89d17203d5d1c4b6dcfb5a9911c669826ba5100
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MzF3D:i5nkFGMOtEvwDpjNbwQEqD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4468-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000e000000023167-13.dat	CryptoLocker_rule2
behavioral2/memory/4468-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1816-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1816-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4468-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1816-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1816-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4468-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000e000000023167-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4468-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1816-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1816-55-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1816	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 4468 wrote to memory of 1816	4468	2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe	85
PID 4468 wrote to memory of 1816	4468	2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe	85
PID 4468 wrote to memory of 1816	4468	2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4468
- 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:1816

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
50KB

MD5
c5a03ea8e97d364e8d189907abdc392c

SHA1
bc191e9cafdbaea5dfb48afcbbda127811fe8372

SHA256
885b357195650cdb5a8a2eb183a8d7303c808d2760ae8f650fb825b416ac8602

SHA512
031293f475c09ed56501355a9e4571bbdeadcb82186bf573efc2d8c3825aea7549fc9c2730c130857ac585405a8a20459bf5c2849cc0c0d2e378afafec9ca3da

Download Submit
memory/1816-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1816-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1816-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1816-55-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4468-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4468-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4468-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4468-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4468-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download