7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873

Analysis

max time kernel
145s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2022 17:24

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General

Target

7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe
Size

91KB
MD5

20dc7785df0f2f68ee77267b4f170620
SHA1

fe3aba7117d9093847b0f9e64e439ae3f376a6bc
SHA256

7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873
SHA512

47705fca579e80e5ab8d24562186c56c3fcad8c47d341f29b201f1610784ec0940bd63938d1a9ba5effd4fbf5687f2fa9f85d6ab6b60d40c1c4826a4acdb16fe
SSDEEP

768:tJLmlmGtKHKtK6krYLVvAfzlY7TOvvRtwIh41SF+FiLqKAYPUWPu/Yj+cE0zGhju:tEyoVviY7WnhDAFiW4PUPM+cxzGhjE2Q

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2360	resvr.exe

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-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Ë®Ó¡±êÇ©ÏµÍ³.lnk	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Ë®Ó¡±êÇ©ÏµÍ³.lnk	resvr.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\Microsoft Shared\Index.dat	resvr.exe
File opened for modification	C:\Program Files (x86)\Common Files\Microsoft Shared\Index.dat	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe
File created	C:\Program Files (x86)\Common Files\Microsoft Shared\resvr.exe	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4820 wrote to memory of 2360	4820	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe	85
PID 4820 wrote to memory of 2360	4820	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe	85
PID 4820 wrote to memory of 2360	4820	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe	85
PID 4820 wrote to memory of 1764	4820	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe	86
PID 4820 wrote to memory of 1764	4820	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe	86
PID 4820 wrote to memory of 1764	4820	7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe	86

C:\Users\Admin\AppData\Local\Temp\7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe
"C:\Users\Admin\AppData\Local\Temp\7258a0e26912f41d939951cf0ec310228a677fb079058001aa64fdc5bf921873.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Program Files (x86)\Common Files\Microsoft Shared\resvr.exe
  "C:\Program Files (x86)\Common Files\Microsoft Shared\resvr.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Drops file in Program Files directory
  PID:2360
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\X.bat" "
  2⤵
  PID:1764

Network

MITRE ATT&CK Enterprise v6

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:\Program Files (x86)\Common Files\Microsoft Shared\resvr.exe

Filesize
68KB

MD5
8c9e528d243caaa37bc3fb1dde6860f2

SHA1
849c8b0d7a310a06537127a0851c0c0afb56aa40

SHA256
32f97a7f0a3f6eea27b5bcd67b75cad5cb2702b449fd95efde46a1fa9beef20f

SHA512
6123b78a4db4fa18752ec94cddaec3b5d90cb806ce6ed3b2caed8a945c8c6f5d2b1ebff32a02c29368563bdc21cb564d188c8851b0132b0a5709b16d803e96b6

Download Submit
C:\Program Files (x86)\Common Files\Microsoft Shared\resvr.exe

Filesize
68KB

MD5
8c9e528d243caaa37bc3fb1dde6860f2

SHA1
849c8b0d7a310a06537127a0851c0c0afb56aa40

SHA256
32f97a7f0a3f6eea27b5bcd67b75cad5cb2702b449fd95efde46a1fa9beef20f

SHA512
6123b78a4db4fa18752ec94cddaec3b5d90cb806ce6ed3b2caed8a945c8c6f5d2b1ebff32a02c29368563bdc21cb564d188c8851b0132b0a5709b16d803e96b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\X.bat

Filesize
274B

MD5
78e4d2bb980b41da777e3a92947ed64a

SHA1
a9d47d4bd345f11b0541d00e32433847f324c847

SHA256
4b5a1910de3c014bca66c6b69aa5d249830f090afc23f1fea02730614dfe48bb

SHA512
00923c79a3088dab1c759656c23fc348baa977e0b25811c59c90b63932164f8a58a5b622a8f2a4c160bde3f13c33bdc4e487f95529c7893c402cce71e0324de7

Download Submit
memory/1764-137-0x0000000000000000-mapping.dmp

Download
memory/2360-133-0x0000000000000000-mapping.dmp

Download
memory/2360-139-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2360-141-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4820-132-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4820-138-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download