caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53

Analysis

max time kernel
173s
max time network
93s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27-11-2022 07:06

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General

Target

caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe
Size

25KB
MD5

b9841a0f9a092cafe713e08ad5340e24
SHA1

255c1d9653ab94d29fe5f65510ff084b9ea140c2
SHA256

caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53
SHA512

f76568cbf1dc419ab39b78b7fb6446a21d5d777dc7a5468beea770d9b7b19a424444f71114db0610cc23a73f2224996182542df79d24774b868ba1ea90eb6a7d
SSDEEP

384:fwVTyPgD6SgOViuyg0pBH2W4Gah9WrUk2MgDqDkIcBsQe6nnfThCNqtz9cLKD:oLGQViuygAyuUk2CgHBZ5nwCe

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1524	cmss.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1100-55-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/files/0x000b000000012306-56.dat	upx
behavioral1/memory/1524-58-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/memory/1100-60-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/files/0x000b000000012306-62.dat	upx
behavioral1/memory/1524-64-0x0000000000400000-0x0000000000415000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
1240	WScript.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\cmss.exe	caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe
File opened for modification	C:\Program Files (x86)\cmss.exe	caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1100	caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe
1524	cmss.exe
1100	caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1524	cmss.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 1240	1100	caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe	29
PID 1100 wrote to memory of 1240	1100	caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe	29
PID 1100 wrote to memory of 1240	1100	caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe	29
PID 1100 wrote to memory of 1240	1100	caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe	29

C:\Users\Admin\AppData\Local\Temp\caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe
"C:\Users\Admin\AppData\Local\Temp\caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\7478.vbs"
  2⤵
  - Deletes itself
  PID:1240

C:\Program Files (x86)\cmss.exe
"C:\Program Files (x86)\cmss.exe"
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1524

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\7478.vbs

Filesize
500B

MD5
f987ed9a13348b7bbf4da9dacb355b7d

SHA1
c2cc0febd562297648304dc78bf845eb6409e9e3

SHA256
a9ed7a8126aa3f99df4ecd9e7fb6c673d28811f9b5644c48f048c7d415b308a1

SHA512
159befd0b4c47935292707dee46eb64257472a0a41ecc5cc4dbffc91a07782c9a25d2fdc93f59d77b78454a0dbb5b1ee2a73f4bcb51311e5e238775b090a78e3

Download Submit
C:\Program Files (x86)\cmss.exe

Filesize
25KB

MD5
b9841a0f9a092cafe713e08ad5340e24

SHA1
255c1d9653ab94d29fe5f65510ff084b9ea140c2

SHA256
caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53

SHA512
f76568cbf1dc419ab39b78b7fb6446a21d5d777dc7a5468beea770d9b7b19a424444f71114db0610cc23a73f2224996182542df79d24774b868ba1ea90eb6a7d

Download Submit
C:\Program Files (x86)\cmss.exe

Filesize
25KB

MD5
b9841a0f9a092cafe713e08ad5340e24

SHA1
255c1d9653ab94d29fe5f65510ff084b9ea140c2

SHA256
caa465e63287335c8a4b13ad6adb60f49c4aff55e40ac40f5694829fae11db53

SHA512
f76568cbf1dc419ab39b78b7fb6446a21d5d777dc7a5468beea770d9b7b19a424444f71114db0610cc23a73f2224996182542df79d24774b868ba1ea90eb6a7d

Download Submit
memory/1100-54-0x0000000076391000-0x0000000076393000-memory.dmp

Filesize
8KB

Download
memory/1100-55-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1100-60-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1524-58-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1524-64-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download