0fba402ee75692b07958fbbecab17645e82958da18ce38b13c90b6611eb34658

General

Target

2024-04-10_05615f65158c03632634a23df3edbbc7_cryptolocker.exe
Size

38KB
MD5

05615f65158c03632634a23df3edbbc7
SHA1

b8e38aeb7fc6b8e271c66531f46f3b40fcfefe2f
SHA256

0fba402ee75692b07958fbbecab17645e82958da18ce38b13c90b6611eb34658
SHA512

4acb846e6e002f92bbf896afbe89aa81eda69bdfd9e55af70532f4f70dfed4b4f9154f19a9d6bf8b07d415cc068896a294eed1a38a72caf72119cc1efdec4881
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnv00Gxmz:m5nkFNMOtEvwDpjG8h00Gxmz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/5048-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023335-13.dat	CryptoLocker_rule2
behavioral2/memory/696-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5048-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/696-60-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/696-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5048-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/696-60-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/5048-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023335-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/696-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/5048-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/696-60-0x0000000000500000-0x000000000050E000-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-04-10_05615f65158c03632634a23df3edbbc7_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
696	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 5048 wrote to memory of 696	5048	2024-04-10_05615f65158c03632634a23df3edbbc7_cryptolocker.exe	93
PID 5048 wrote to memory of 696	5048	2024-04-10_05615f65158c03632634a23df3edbbc7_cryptolocker.exe	93
PID 5048 wrote to memory of 696	5048	2024-04-10_05615f65158c03632634a23df3edbbc7_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-04-10_05615f65158c03632634a23df3edbbc7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_05615f65158c03632634a23df3edbbc7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5048
- 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:696

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=5428 --field-trial-handle=2700,i,14629483171127516024,12350888228055326066,262144 --variations-seed-version /prefetch:8
1⤵
PID:3308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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
39KB

MD5
97dd0a3b586260fcb0ec6c1a1e2f0f5f

SHA1
ad45a0a4a9c32fdc40292dff812572e3676663ff

SHA256
bc6645b058d78ac842022c96dcdf5ea60183f76f4542343e9fdf656a7d4b8cea

SHA512
8a5f35b463bccb9e67d2dee3d2a34adee7fa7982d46015cf5ef1aead57926f907e5bb0f1f140ffb5b259746c447a4f7f7a8bb9ac799581d9b8a12163aa719db2

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

Filesize
1KB

MD5
7f9fbf64ebbb6263e1d9ab5f16d5e5c3

SHA1
f544e146ecbed685179f9eabfb874a056d610b81

SHA256
a3c232211622edd6e5a0b57387a2018186ae87e419cad211b80f72f07ae79f55

SHA512
b9d25a73255daee8e6dc0367df0fe61dea663f29629aa74d8006a71828d31bd65bfba82fb786c2293fe529aec71582e4e5f23e18c500c2efa17ef443a2df1551

Download Submit
memory/696-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/696-20-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/696-22-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/696-60-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/5048-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/5048-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/5048-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/5048-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/5048-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download

Analysis

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