fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8

General

Target

fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe
Size

43KB
MD5

4844ce6123f316de09ad8d30c8aaabc2
SHA1

c11fe89eeb001e9b33296144e45fff7d597a8dae
SHA256

fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8
SHA512

15f5d394884eaf37532226b7fd0e7608064f4aeeb0bc995295e62b4b508e9b17ec00a4a80cd30dd2a3da5c687ba7742616045b6ce3582ac61ff0fb8f360273a6
SSDEEP

768:qspvryXgi4VhQelswKhGSnmAH0KBh/DokmAAK1K2M67yfirwuS:tpvryX54r67skmAAK1K8Miy

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

caycwq.exe

pid process

1996 caycwq.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1140 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

caycwq.exe

pid process

1996 caycwq.exe

pid	process
1996	caycwq.exe

pid	process
1140	cmd.exe

pid	process
1996	caycwq.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

caycwq.exe

description	ioc	process
File opened (read-only)	\??\Z:	caycwq.exe
File opened (read-only)	\??\G:	caycwq.exe
File opened (read-only)	\??\K:	caycwq.exe
File opened (read-only)	\??\T:	caycwq.exe
File opened (read-only)	\??\Y:	caycwq.exe
File opened (read-only)	\??\P:	caycwq.exe
File opened (read-only)	\??\R:	caycwq.exe
File opened (read-only)	\??\U:	caycwq.exe
File opened (read-only)	\??\E:	caycwq.exe
File opened (read-only)	\??\I:	caycwq.exe
File opened (read-only)	\??\J:	caycwq.exe
File opened (read-only)	\??\N:	caycwq.exe
File opened (read-only)	\??\O:	caycwq.exe
File opened (read-only)	\??\Q:	caycwq.exe
File opened (read-only)	\??\S:	caycwq.exe
File opened (read-only)	\??\X:	caycwq.exe
File opened (read-only)	\??\F:	caycwq.exe
File opened (read-only)	\??\H:	caycwq.exe
File opened (read-only)	\??\L:	caycwq.exe
File opened (read-only)	\??\M:	caycwq.exe
File opened (read-only)	\??\V:	caycwq.exe
File opened (read-only)	\??\W:	caycwq.exe

Drops file in System32 directory 1 IoCs

Processes:

caycwq.exe

description ioc process

File created C:\Windows\SysWOW64\hra33.dll caycwq.exe
Drops file in Program Files directory 2 IoCs

Processes:

caycwq.exe

description ioc process

File created C:\Program Files\7-Zip\lpk.dll caycwq.exe
File opened for modification C:\Program Files\7-Zip\lpk.dll caycwq.exe

description	ioc	process
File created	C:\Windows\SysWOW64\hra33.dll	caycwq.exe

description	ioc	process
File created	C:\Program Files\7-Zip\lpk.dll	caycwq.exe
File opened for modification	C:\Program Files\7-Zip\lpk.dll	caycwq.exe

Drops file in Windows directory 2 IoCs

Processes:

fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe

description	ioc	process
File created	C:\Windows\caycwq.exe	fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe
File opened for modification	C:\Windows\caycwq.exe	fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe

description pid process

Token: SeIncBasePriorityPrivilege 2012 fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	2012	fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe

description	pid	process	target process
PID 2012 wrote to memory of 1140	2012	fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe	cmd.exe
PID 2012 wrote to memory of 1140	2012	fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe	cmd.exe
PID 2012 wrote to memory of 1140	2012	fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe	cmd.exe
PID 2012 wrote to memory of 1140	2012	fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe
"C:\Users\Admin\AppData\Local\Temp\fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2012

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\FE0094~1.EXE > nul
2⤵
- Deletes itself
PID:1140

C:\Windows\caycwq.exe
C:\Windows\caycwq.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Program Files directory
PID:1996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\caycwq.exe

Filesize
43KB

MD5
4844ce6123f316de09ad8d30c8aaabc2

SHA1
c11fe89eeb001e9b33296144e45fff7d597a8dae

SHA256
fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8

SHA512
15f5d394884eaf37532226b7fd0e7608064f4aeeb0bc995295e62b4b508e9b17ec00a4a80cd30dd2a3da5c687ba7742616045b6ce3582ac61ff0fb8f360273a6

Download Submit
C:\Windows\caycwq.exe

Filesize
43KB

MD5
4844ce6123f316de09ad8d30c8aaabc2

SHA1
c11fe89eeb001e9b33296144e45fff7d597a8dae

SHA256
fe0094b43cf5f527b520fd387b7bb7532be6adb2cf773fd5615c0a41190081f8

SHA512
15f5d394884eaf37532226b7fd0e7608064f4aeeb0bc995295e62b4b508e9b17ec00a4a80cd30dd2a3da5c687ba7742616045b6ce3582ac61ff0fb8f360273a6

Download Submit
\Windows\SysWOW64\hra33.dll

Filesize
52KB

MD5
27f04eb7bf8773f8a0af798ba46c88f8

SHA1
3681c8a04416fd57495999f7d3153a9f02d0f136

SHA256
851657bcbd289c3b4b508589a8084c0c46698dc841a3c91efa2ffc091ccd98d1

SHA512
0bed96d86073fab26d3f62f72f3fc97aa1a5ae3433aa24094ae991de391e4086d477d168e1af11a7f0939a884bb55d979642cc3aee0bba63425b41e303def44b

Download Submit
memory/1140-57-0x0000000000000000-mapping.dmp

Download
memory/2012-54-0x0000000076391000-0x0000000076393000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads