7e7da5885a343d54128603cad73b2f2115f1a8e2dc931e92ba03fc931b622948

Analysis

max time kernel
143s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 15:34

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General

Target

2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe
Size

96KB
MD5

bc8b1eecd565287772776e7d1ae6a320
SHA1

b757e94b1bd8d34856e216592eaf1de6a91784c8
SHA256

7e7da5885a343d54128603cad73b2f2115f1a8e2dc931e92ba03fc931b622948
SHA512

3e3a24e085a01ada3ef8ad120bf690c7d4afbfa47331183455391157254f5d3836cdc127c59b8246160c959c1a2142a959c8647cf8f30d99906120a12bd7bb7d
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvj8+:xj+VGMOtEvwDpjubwQEIiVmkPL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000f000000023249-13.dat	CryptoLocker_rule2
behavioral2/memory/3012-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2592-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000f000000023249-13.dat	CryptoLocker_set1
behavioral2/memory/3012-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2592-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000f000000023249-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3012-19-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2592-26-0x0000000000500000-0x0000000000510000-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	2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2592	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 3012 wrote to memory of 2592	3012	2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe	90
PID 3012 wrote to memory of 2592	3012	2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe	90
PID 3012 wrote to memory of 2592	3012	2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2592

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=1312 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
1⤵
PID:2300

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
96KB

MD5
df59ab107d67a040876dfb4812bf4396

SHA1
891f91083325c42e438a1d3de42c7effdecbebbb

SHA256
bc220f69e539bcf3f63d4761df39b06095a63962ab45287220ea693ac731f6b5

SHA512
b24da5cd68855998146053b5ce9f5eb64db725b4145f5e3349f29419086008677f4fcbcb7953c65493a8bde73b096c2c98b0d9efa1c8a4ed80466397d7fdfff8

Download Submit
memory/2592-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2592-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2592-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3012-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3012-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3012-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download