07a948d3d8e4c2a18b69f8972ccaa4c829c094e37c2aae7654bd4a636bf47381

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 00:33

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General

Target

2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe
Size

102KB
MD5

61038d922c70729ccdef0d8a65e5b0c0
SHA1

66d2ca3a749ab88256146f8ffa81f64e95525795
SHA256

07a948d3d8e4c2a18b69f8972ccaa4c829c094e37c2aae7654bd4a636bf47381
SHA512

90db9124f3ec99b820c6d9c5e91ea3a6ad63bb8b24c7eff8d0e70fa7d3ac3089c40d3bc6d3c3607632c3a81527e83719d5d99582eabaca6ed54784984be9adfe
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2mwVek:xj+VGMOtEvwDpjubwQEIiVmkxv/yk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4440-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002325d-13.dat	CryptoLocker_rule2
behavioral2/memory/4440-22-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4440-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002325d-13.dat	CryptoLocker_set1
behavioral2/memory/4440-22-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4440-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002325d-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4440-22-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2936-26-0x0000000000500000-0x0000000000510000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2936	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 4440 wrote to memory of 2936	4440	2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe	99
PID 4440 wrote to memory of 2936	4440	2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe	99
PID 4440 wrote to memory of 2936	4440	2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2936

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4204 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
1⤵
PID:2116

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
102KB

MD5
b8e238c75f520098cd0e89b63ffcead7

SHA1
d781c7cb663a875695442a7a2bb44a396e47077a

SHA256
3c42fb86d01bd3e3f4f747778fdf10f57f3f1a31e8c6cb271f1595eb13dc5d4b

SHA512
745480a181ee2f2d8781a71be87b2095b147bf878b26aa292fa3c9509fcdd8051a7bf5abc37176278ee97d24e23b1173a71ed466b9529fe8c7ff1cf8229bea4a

Download Submit
memory/2936-18-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2936-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4440-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4440-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4440-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4440-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4440-22-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download