8df2b918b0949b6c1e8296c8bd38d31bfb2f5501d0e2e2bc897bf64cbe04a161

Analysis

max time kernel
120s
max time network
147s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/12/2023, 16:26

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General

Target

xin037.exe
Size

22KB
MD5

3d820ea021ed22996f873b48e2f8df2d
SHA1

373adfa99b3f7bd34e070b547fa370eafe1e93a7
SHA256

db023f3427fb2ada09b749a726743e4f215653cd2d47e548f8d71b0eca47d199
SHA512

89b36567a4dd06b47d890f1ca95c6a4df66e496d8c2f7c506e7f29581e39ea73d9576456e557ccc330385a19f60756091c440e91a0b568831f27f900d140ce2a
SSDEEP

384:U9kcqWBCu84UOY08BgfmB7Fyvupe1eY0JwtMwKFTwNcSWVT:SkLWr84pTYgeBByvJ1eRSMwKF0NczVT

Score

7^/10

upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral5/files/0x002d000000014c1d-2.dat	acprotect

Deletes itself 1 IoCs

pid	Process
2828	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
1256	xin037.exe
1256	xin037.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral5/files/0x002d000000014c1d-2.dat	upx
behavioral5/memory/1256-6-0x0000000010000000-0x0000000010014000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\RasEngine.dat	xin037.exe
File created	C:\Windows\SysWOW64\comres.dll	xin037.exe
File created	C:\Windows\SysWOW64\RasEngine.dat	xin037.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\fonts\JLFDNF.ttf	xin037.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1256 wrote to memory of 2828	1256	xin037.exe	29
PID 1256 wrote to memory of 2828	1256	xin037.exe	29
PID 1256 wrote to memory of 2828	1256	xin037.exe	29
PID 1256 wrote to memory of 2828	1256	xin037.exe	29

C:\Users\Admin\AppData\Local\Temp\xin037.exe
"C:\Users\Admin\AppData\Local\Temp\xin037.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\clear.bat" "
  2⤵
  - Deletes itself
  PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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:\Users\Admin\AppData\Local\Temp\clear.bat

Filesize
113B

MD5
ef5b57d029351bb12fa3e75bd99ea711

SHA1
a9cfa8b49fa8a016abf38edca45b9e369c96158e

SHA256
75d0e2bd8d5ce9b015a828802057e009975d444bdcff8d7e8778aa1b68e1e70c

SHA512
3353e5a12190824f484c17d316e36d5a00a509de981ca24559bc072f00a38c7981b633f94fdde4b65114a7a6fe88f6ab3f7a04992cf76e2bf089fe6023d96b4d

Download Submit
\Users\Admin\AppData\Local\Temp\jlfdnf.dll

Filesize
15KB

MD5
9a54ae64fd84725b3dc852bf6e221def

SHA1
a0a4f67abda9a61383e6a1253e455c107fd23b91

SHA256
9d1630be06b8ea8eaa4407b09b5a64648fcd7e4cc99c0156ef522917c387b919

SHA512
d50f733efd83367f941d3d5eabb161b2184dd9bbda77baf5d83fa0e43b7b84b096d02f617d4e071f76c20f06eb5129b6f7e8af0e4619adf765e393c12119b6bb

Download Submit
\Windows\SysWOW64\RasEngine.dat

Filesize
10KB

MD5
e6e13b8d8fc47f5545b57c50ddb6438e

SHA1
0d9520c050c6e45ffc0c6dedbf31142a2613737b

SHA256
019195d80e0fea1a9b576bc17f50735d858537b3fe93442c005d89cbba45ab63

SHA512
60209ede8465ad6f109b25fcd41f796ca1c2c05e542b42a4b9c76ce71c8734ac222873ccfd7711e67906faac25e29507965d7958ab8f2e231a50390551c7c5d1

Download Submit
memory/1256-6-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

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