ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a

Analysis

max time kernel
33s
max time network
73s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
20/10/2022, 19:44

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General

Target

ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe
Size

593KB
MD5

a01ff27c6d183a9b58e6c7394db22250
SHA1

78a563c62fbf2d2b065c82ba741ddc9465f83760
SHA256

ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a
SHA512

f0541e5d656298f703c1a3cc3bee5e745eb127123ddb7280e3b64936c1803c4d311d0d1592705359871319e5364bb318871b47e3b2bc00a2187cc0fc72a84359
SSDEEP

12288:VuBSP/amCdBJSpc/aaT9/gur79Yq63kfydqAKTE1qH:sA6dBwy/aI/gK79YH0FAgxH

Score

8^/10

bootkit persistence upx

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
4828	BqjnC0gFVHRul8.exe
2576	win.exe
1112	wio.exe
5020	wiq.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2736-158-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/memory/2736-162-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/memory/2736-160-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/memory/2736-166-0x0000000000400000-0x000000000040E000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
3428	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Azopuzifowasilar = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Fokbdpcf.dll\",Startup"	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\physicaldrive0	win.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5020 set thread context of 2736	5020	wiq.exe	88

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
4828	BqjnC0gFVHRul8.exe
4828	BqjnC0gFVHRul8.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2576	win.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4828	BqjnC0gFVHRul8.exe
5020	wiq.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 384 wrote to memory of 4828	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	81
PID 384 wrote to memory of 4828	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	81
PID 384 wrote to memory of 4828	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	81
PID 384 wrote to memory of 2576	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	82
PID 384 wrote to memory of 2576	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	82
PID 384 wrote to memory of 2576	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	82
PID 384 wrote to memory of 1112	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	83
PID 384 wrote to memory of 1112	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	83
PID 384 wrote to memory of 1112	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	83
PID 384 wrote to memory of 5020	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	84
PID 384 wrote to memory of 5020	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	84
PID 384 wrote to memory of 5020	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	84
PID 384 wrote to memory of 4460	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	85
PID 384 wrote to memory of 4460	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	85
PID 384 wrote to memory of 4460	384	ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe	85
PID 1112 wrote to memory of 3428	1112	wio.exe	87
PID 1112 wrote to memory of 3428	1112	wio.exe	87
PID 1112 wrote to memory of 3428	1112	wio.exe	87
PID 5020 wrote to memory of 2736	5020	wiq.exe	88
PID 5020 wrote to memory of 2736	5020	wiq.exe	88
PID 5020 wrote to memory of 2736	5020	wiq.exe	88
PID 5020 wrote to memory of 2736	5020	wiq.exe	88
PID 5020 wrote to memory of 2736	5020	wiq.exe	88
PID 5020 wrote to memory of 2736	5020	wiq.exe	88
PID 5020 wrote to memory of 2736	5020	wiq.exe	88
PID 5020 wrote to memory of 2736	5020	wiq.exe	88

C:\Users\Admin\AppData\Local\Temp\ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe
"C:\Users\Admin\AppData\Local\Temp\ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:384
- C:\Users\Admin\BqjnC0gFVHRul8.exe
  BqjnC0gFVHRul8.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4828
- C:\Users\Admin\win.exe
  win.exe
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  PID:2576
- C:\Users\Admin\wio.exe
  wio.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1112
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Fokbdpcf.dll",Startup
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    PID:3428
- C:\Users\Admin\wiq.exe
  wiq.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5020
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Windows\system32\svchost.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2736
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del ac658726e7d186f5732d1496d473cee9a4119675da4a4f95dce943350459da0a.exe
  2⤵
  PID:4460

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Fokbdpcf.dll

Filesize
103KB

MD5
19f8a2d4e8270baf8bd5a6086f565e70

SHA1
b5a05abe09066906b569f0fadefb00fb567ef547

SHA256
2f677a22315a327d82514449be56d53cd85a8dd3eef75317231647faac6caf50

SHA512
8a5686b22a993f8c38420f9c163e6321eab7a089858da4852160684ccc260d82f21e933365e0f413418849f9af26786d805d0dd6295546b52ae9ab5fcf88ed63

Download Submit
C:\Users\Admin\AppData\Local\Fokbdpcf.dll

Filesize
103KB

MD5
19f8a2d4e8270baf8bd5a6086f565e70

SHA1
b5a05abe09066906b569f0fadefb00fb567ef547

SHA256
2f677a22315a327d82514449be56d53cd85a8dd3eef75317231647faac6caf50

SHA512
8a5686b22a993f8c38420f9c163e6321eab7a089858da4852160684ccc260d82f21e933365e0f413418849f9af26786d805d0dd6295546b52ae9ab5fcf88ed63

Download Submit
C:\Users\Admin\BqjnC0gFVHRul8.exe

Filesize
148KB

MD5
fc8e30e732d9e1483b7d29ea39ad9c15

SHA1
04215f820a214d11e1dd9a832ac264605cf98604

SHA256
c3bb55f793445fe9ca4dbdd55c7dd1d5ec90c807d3270833b3f9678a9a956585

SHA512
d56cb22fde3d54cc4d5008857e573e4b8182b4d690c9a9ca9978aca5ed0051001c919588918ac17dd7c3d41c90acca9411d42cf33c10accd12d3d313fb60afd6

Download Submit
C:\Users\Admin\BqjnC0gFVHRul8.exe

Filesize
148KB

MD5
fc8e30e732d9e1483b7d29ea39ad9c15

SHA1
04215f820a214d11e1dd9a832ac264605cf98604

SHA256
c3bb55f793445fe9ca4dbdd55c7dd1d5ec90c807d3270833b3f9678a9a956585

SHA512
d56cb22fde3d54cc4d5008857e573e4b8182b4d690c9a9ca9978aca5ed0051001c919588918ac17dd7c3d41c90acca9411d42cf33c10accd12d3d313fb60afd6

Download Submit
C:\Users\Admin\win.exe

Filesize
172KB

MD5
16dfe37b77854e727eabedd05239ebee

SHA1
9218bb944834fb46eb2f04858ada0dacdf821d77

SHA256
8ee33551b06628414ed9003fd0c35ab5abbedf6f85e50c9bfdb99fc72172d267

SHA512
56c765b030817f0903dd9ce50aefb3511e30706891f7d9accd7f95c465d1890fdda3ab59238919b59951fe1c361699f80675b6fab9c9df26dd4f22d97b0ca903

Download Submit
C:\Users\Admin\win.exe

Filesize
172KB

MD5
16dfe37b77854e727eabedd05239ebee

SHA1
9218bb944834fb46eb2f04858ada0dacdf821d77

SHA256
8ee33551b06628414ed9003fd0c35ab5abbedf6f85e50c9bfdb99fc72172d267

SHA512
56c765b030817f0903dd9ce50aefb3511e30706891f7d9accd7f95c465d1890fdda3ab59238919b59951fe1c361699f80675b6fab9c9df26dd4f22d97b0ca903

Download Submit
C:\Users\Admin\wio.exe

Filesize
103KB

MD5
f7756f6980dc23ef661085d6cd999831

SHA1
cd77f7a9bc8c058023779a531e2deac8c3241638

SHA256
53122fb8bd9b1a304af221e3172c1770f18d20e71f275b98bcfe10cc81ec3740

SHA512
b1e51945dea731c962140b9755c2d6b549feb3fb0d9793a0c67fe6a99498dde1a4744931ca80053f723eec221975e26220e7c357188bd0f11f5966bf2cc618df

Download Submit
C:\Users\Admin\wio.exe

Filesize
103KB

MD5
f7756f6980dc23ef661085d6cd999831

SHA1
cd77f7a9bc8c058023779a531e2deac8c3241638

SHA256
53122fb8bd9b1a304af221e3172c1770f18d20e71f275b98bcfe10cc81ec3740

SHA512
b1e51945dea731c962140b9755c2d6b549feb3fb0d9793a0c67fe6a99498dde1a4744931ca80053f723eec221975e26220e7c357188bd0f11f5966bf2cc618df

Download Submit
C:\Users\Admin\wiq.exe

Filesize
52KB

MD5
65a849404ffe62e0d2f56d7993f00920

SHA1
6401a9e92690172958fbf0ee122990479628e92f

SHA256
afe7c75a0e8d28d5f068cf3605f9aa10016d37348eab013b6dc487e943110c50

SHA512
99af61b924d550ff3d8c52db86991cc40ebd94510982dc69ce99bb975ad8de32c07ea9c7eb28d05e55117b15ab3b57d3d2bfe25c744c8918d63d96ef974d5d38

Download Submit
C:\Users\Admin\wiq.exe

Filesize
52KB

MD5
65a849404ffe62e0d2f56d7993f00920

SHA1
6401a9e92690172958fbf0ee122990479628e92f

SHA256
afe7c75a0e8d28d5f068cf3605f9aa10016d37348eab013b6dc487e943110c50

SHA512
99af61b924d550ff3d8c52db86991cc40ebd94510982dc69ce99bb975ad8de32c07ea9c7eb28d05e55117b15ab3b57d3d2bfe25c744c8918d63d96ef974d5d38

Download Submit
memory/1112-152-0x00000000020D1000-0x00000000020DF000-memory.dmp

Filesize
56KB

Download
memory/1112-144-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/2576-151-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2576-161-0x0000000002090000-0x00000000020E6000-memory.dmp

Filesize
344KB

Download
memory/2576-165-0x0000000002090000-0x00000000020E6000-memory.dmp

Filesize
344KB

Download
memory/2576-164-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2576-154-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2736-162-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2736-158-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2736-160-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2736-166-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3428-156-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/3428-163-0x0000000000CA1000-0x0000000000CAF000-memory.dmp

Filesize
56KB

Download