302c727ee807bba105de67dfcd061768dbe771cb6fe5e04a362346348fd4821c

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 03:51

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General

Target

2024-04-26_c6479c3148aa5dfdad913cc8b11cf1b3_avoslocker_cobalt-strike_floxif.exe
Size

989KB
MD5

c6479c3148aa5dfdad913cc8b11cf1b3
SHA1

95d961735cbf1c3318e688b91bec803218d463e7
SHA256

302c727ee807bba105de67dfcd061768dbe771cb6fe5e04a362346348fd4821c
SHA512

9fc57b357ca0977cc8434c43c906a779a48295464ef0f4925570322f71e21be51e6945fb7db0548cb11d099d38292ec78496bb4a8dda98d4b0c4c649ddf0deeb
SSDEEP

24576:V3diFjFZyTE4vttcY+/f2fLnYCKLgXM+TK2zM7YLrEH76E:NdUjmFtcY+/f2fLnYCKUXM+TK2I7YpE

Score

9^/10

upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e62b-1.dat	UPX
behavioral2/memory/4868-4-0x0000000010000000-0x0000000010030000-memory.dmp	UPX
behavioral2/memory/4868-8-0x0000000010000000-0x0000000010030000-memory.dmp	UPX

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000300000001e62b-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4868	2024-04-26_c6479c3148aa5dfdad913cc8b11cf1b3_avoslocker_cobalt-strike_floxif.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000300000001e62b-1.dat	upx
behavioral2/memory/4868-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4868-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-04-26_c6479c3148aa5dfdad913cc8b11cf1b3_avoslocker_cobalt-strike_floxif.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3484	4868	WerFault.exe	83

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4868	2024-04-26_c6479c3148aa5dfdad913cc8b11cf1b3_avoslocker_cobalt-strike_floxif.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-26_c6479c3148aa5dfdad913cc8b11cf1b3_avoslocker_cobalt-strike_floxif.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_c6479c3148aa5dfdad913cc8b11cf1b3_avoslocker_cobalt-strike_floxif.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:4868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4868 -s 564
  2⤵
  - Program crash
  PID:3484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4868 -ip 4868
1⤵
PID:2700

Network

MITRE ATT&CK Matrix

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/4868-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4868-6-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4868-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download