416d5dde16e16b755d1e8890811bf678a7dd2c335b84023a75919dd7c4a0ad9d

General

Target

2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exe
Size

95KB
MD5

ddcca020067bbb9a2f4bcd82c9737a3b
SHA1

603ac1e5430904cb4dea1773648162873c396c09
SHA256

416d5dde16e16b755d1e8890811bf678a7dd2c335b84023a75919dd7c4a0ad9d
SHA512

8f1a3defe5213445ef637ebc314ce9a46b8c49132f24cd3dbad63a3d6e18085678a27cdce818ab9a3afa5391d185be80205e69652c52a25e171900dd485b042e
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kg:zCsanOtEvwDpjBT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4836-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/4836-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1804-48-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4836-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/4836-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1804-48-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4836-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral2/memory/4836-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1804-48-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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

Processes:

2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exemisid.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1804 misid.exe

pid	process
1804	misid.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4836-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral2/memory/4836-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1804-48-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

Processes:

2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exe

description	pid	process	target process
PID 4836 wrote to memory of 1804	4836	2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exe	misid.exe
PID 4836 wrote to memory of 1804	4836	2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exe	misid.exe
PID 4836 wrote to memory of 1804	4836	2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_ddcca020067bbb9a2f4bcd82c9737a3b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4836

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:1804

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=4076 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:4508

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
95KB

MD5
dce9e77fc22ac66b96e20ee65ad1c450

SHA1
2eac5abed6125eb4a3bc2962a76f4c83ebf480dd

SHA256
3bb1456adafa7e682f5f8eae68eabfc3e633bc9c2e5141bd3b291893aff27429

SHA512
a9717503a95795619ca1df2d500eae51f6397aedfb6969bd3a58d8cff3d231725c4b105073f91af926ca07572e2eaff06494880b479e8172af72c9d4f4a9737b

Download Submit
C:\Users\Admin\AppData\Local\Temp\misids.exe
Filesize
315B

MD5
a34ac19f4afae63adc5d2f7bc970c07f

SHA1
a82190fc530c265aa40a045c21770d967f4767b8

SHA256
d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

SHA512
42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

Download Submit
memory/1804-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1804-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/1804-48-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4836-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4836-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4836-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4836-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4836-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads