91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2

Analysis

max time kernel
129s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
11-01-2024 19:30

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General

Target

91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe
Size

241KB
MD5

366c76cf135edec8f1d16de7ce3246b9
SHA1

89865b66f2cd1dba132360d0dfe7ea82f46bff07
SHA256

91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2
SHA512

d64db579f2eda7b656bcbccfe3c118bd3367b3de12e0c89a7ede5a36b26cee2f58c27219cf9a1dafda7267e7eda047bd2cdcccd0e9c9e4c3db2767899f41858b
SSDEEP

3072:ZwzvOYR35YP/aKavT/DvbEvKS8I2B+hlsfni3YGByThXKBZkZN4GhQ2eRZh+/bJs:K3iP/aK2hS8/B+rwNBV+UdvrEFp7hK6F

Score

7^/10

upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0006000000023202-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3260	91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000023202-1.dat	upx
behavioral2/memory/3260-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3260-11-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Enumerates connected drives 3 TTPs 1 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

description	ioc	Process
File opened (read-only)	\??\e:	91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2052	3260	WerFault.exe	87
4724	3260	WerFault.exe	87

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3260	91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe
3260	91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3260	91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe

C:\Users\Admin\AppData\Local\Temp\91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe
"C:\Users\Admin\AppData\Local\Temp\91e58838bd3cb708353455932077327ae4b05f1bb3e967bd6fa703b8020d4de2.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 428
  2⤵
  - Program crash
  PID:2052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 468
  2⤵
  - Program crash
  PID:4724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3260 -ip 3260
1⤵
PID:3624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3260 -ip 3260
1⤵
PID:3348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

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\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3260-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3260-5-0x0000000000FD0000-0x0000000000FF9000-memory.dmp

Filesize
164KB

Download
memory/3260-11-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download