6873fa16feb3acf11dc38cff5c30471af9cce6c58416a26d7e91130bb388bd89

Analysis

max time kernel
152s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 15:27

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General

Target

2024-03-12_21af3b45a2eb950e47b5fe8e754f3fa6_cryptolocker.exe
Size

57KB
MD5

21af3b45a2eb950e47b5fe8e754f3fa6
SHA1

8a3a7fd0cd95d3a356e7b380b572290a0d9fc25c
SHA256

6873fa16feb3acf11dc38cff5c30471af9cce6c58416a26d7e91130bb388bd89
SHA512

8e9e981b75ca14712e0477c18bfb1d7199399cfb52addbada1d53f5da59dbaa084f8e143af828c10b8795dce4a6ba4ac0969216e0722640cf533598a8d286626
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Gowfj8ui:xj+VGMOtEvwDpjubEgdi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3900-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023229-13.dat	CryptoLocker_rule2
behavioral2/memory/1848-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3900-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1848-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3900-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023229-13.dat	CryptoLocker_set1
behavioral2/memory/1848-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3900-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1848-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/3900-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023229-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1848-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3900-19-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1848-27-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-12_21af3b45a2eb950e47b5fe8e754f3fa6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1848	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 3900 wrote to memory of 1848	3900	2024-03-12_21af3b45a2eb950e47b5fe8e754f3fa6_cryptolocker.exe	91
PID 3900 wrote to memory of 1848	3900	2024-03-12_21af3b45a2eb950e47b5fe8e754f3fa6_cryptolocker.exe	91
PID 3900 wrote to memory of 1848	3900	2024-03-12_21af3b45a2eb950e47b5fe8e754f3fa6_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-12_21af3b45a2eb950e47b5fe8e754f3fa6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_21af3b45a2eb950e47b5fe8e754f3fa6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3900
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1848

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
57KB

MD5
c258404405ea6743a52b23944085706d

SHA1
5c72558f2bbef4d31d002c67a9575c28bab1c9b5

SHA256
8dee1f423d9c192ab81458aaa0fe9723aebc77406a5bfd04f62abbb44c4e1e80

SHA512
2b7727e1206565b7aaf89cececc4689bed1d86ef4648570725532f0ecf0dd3599413969eae2031be54e3c37a60b07a30ba516d50115bb1cbd3db22159be7d218

Download Submit
memory/1848-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1848-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1848-24-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1848-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3900-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3900-1-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/3900-2-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/3900-3-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/3900-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download