681578d4fa37a378d08c805f74acaaab9c0f72c097888f5579554d3e4fdbf812

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 06:28

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General

Target

862d555f7f10302008d6fe78ab8b022e.exe
Size

749KB
MD5

862d555f7f10302008d6fe78ab8b022e
SHA1

35b1f1b301053e9eb0e0addc530c1893898ea352
SHA256

681578d4fa37a378d08c805f74acaaab9c0f72c097888f5579554d3e4fdbf812
SHA512

fd8e5ae385b89ab79e036447f3d78f7ae6df41adb746d6b7d9cb8d0a82698d698573f3326de067a8b8042ad7bb39cf45c3b3abb8677fcbc969768c8541d63eef
SSDEEP

12288:ljXipx70Np/Z9xwy/bAHmdtYpkzz84cNZcu0uAimaLV+qvTOHsGiE:tX1/PWy/bAHmdWpCYNGu0emaZXqHsGi

Score

7^/10

persistence upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000a000000023231-15.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
1104	862d555f7f10302008d6fe78ab8b022e.exe

Loads dropped DLL 2 IoCs

pid	Process
1104	862d555f7f10302008d6fe78ab8b022e.exe
1104	862d555f7f10302008d6fe78ab8b022e.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000a000000023231-15.dat	upx
behavioral2/memory/1104-18-0x0000000000830000-0x0000000000841000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\srtserv = "C:\\ProgramData\\srtserv\\862d555f7f10302008d6fe78ab8b022e.exe"	862d555f7f10302008d6fe78ab8b022e.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2968	4644	WerFault.exe	15
4572	1104	WerFault.exe	88

Modifies Internet Explorer settings 1 TTPs 4 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	explorer.exe

Modifies registry class 38 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0\NodeSlot = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 56003100000000008f57605912004170704461746100400009000400efbe8f5760594158a0332e00000093e101000000010000000000000000000000000000000f9450004100700070004400610074006100000016000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0 = 50003100000000008f57585b10004c6f63616c003c0009000400efbe8f5760594158a0332e000000a6e10100000001000000000000000000000000000000c7af04014c006f00630061006c00000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0 = 4e003100000000004158a033100054656d7000003a0009000400efbe8f5760594158a0332e000000a7e10100000001000000000000000000000000000000e1320e00540065006d007000000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 78003100000000008f5760591100557365727300640009000400efbe874f77484158a0332e000000c70500000000010000000000000000003a0000000000bb7f5c0055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 50003100000000008f572a5f100041646d696e003c0009000400efbe8f5760594158a0332e00000088e101000000010000000000000000000000000000008c901b01410064006d0069006e00000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0 = 8a003100000000004158a03317003836324435357e310000720009000400efbe4158a0334158a0332e0000002632020000000c000000000000000000000000000000e1320e0038003600320064003500350035006600370066003100300033003000320030003000380064003600660065003700380061006200380062003000320032006500000018000000	explorer.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1340	explorer.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1104	862d555f7f10302008d6fe78ab8b022e.exe
1104	862d555f7f10302008d6fe78ab8b022e.exe
1104	862d555f7f10302008d6fe78ab8b022e.exe
1104	862d555f7f10302008d6fe78ab8b022e.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1340	explorer.exe
1340	explorer.exe
1104	862d555f7f10302008d6fe78ab8b022e.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 408	4644	862d555f7f10302008d6fe78ab8b022e.exe	90
PID 4644 wrote to memory of 408	4644	862d555f7f10302008d6fe78ab8b022e.exe	90
PID 4644 wrote to memory of 408	4644	862d555f7f10302008d6fe78ab8b022e.exe	90
PID 4644 wrote to memory of 1104	4644	862d555f7f10302008d6fe78ab8b022e.exe	88
PID 4644 wrote to memory of 1104	4644	862d555f7f10302008d6fe78ab8b022e.exe	88
PID 4644 wrote to memory of 1104	4644	862d555f7f10302008d6fe78ab8b022e.exe	88

C:\Users\Admin\AppData\Local\Temp\862d555f7f10302008d6fe78ab8b022e.exe
"C:\Users\Admin\AppData\Local\Temp\862d555f7f10302008d6fe78ab8b022e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4644 -s 220
  2⤵
  - Program crash
  PID:2968
- C:\ProgramData\srtserv\862d555f7f10302008d6fe78ab8b022e.exe
  C:\ProgramData\srtserv\862d555f7f10302008d6fe78ab8b022e.exe -wait
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1104
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 220
    3⤵
    - Program crash
    PID:4572
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe C:\Users\Admin\AppData\Local\Temp\862d555f7f10302008d6fe78ab8b022e
  2⤵
  PID:408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4644 -ip 4644
1⤵
PID:3024

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1340

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1104 -ip 1104
1⤵
PID:116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\srtserv\862d555f7f10302008d6fe78ab8b022e.exe

Filesize
128KB

MD5
e0669670a3e3e517e8fc4eec21540bcb

SHA1
9186ff25866546c71f7f072faaeb69326a701e76

SHA256
86d4934232276b3d213ac5e383c9bef75c424bcd1b2bfd6a16564786d6f98868

SHA512
f25ef0f47f89967c9d82e4eed0396be7e27acf515882851aeb1ba7d56ca6311957d9b63d59f527f1770fe1ef012be63f440bfa912d046cc480884f2bed5c99b1

Download Submit
C:\ProgramData\srtserv\862d555f7f10302008d6fe78ab8b022e.exe

Filesize
70KB

MD5
2474523fa28d00c9bc0d3d8945fbe4c8

SHA1
48fa91de3591ecfa418cab859ad7d131840f2331

SHA256
7b200395ba21ae23b2d9c682250fc7837c58aa1856c7c2ddde950fb26b06c749

SHA512
b2510bf094fb424a3f0d551e8cf878b1bc47d61a43a39b459c0a6aa059461b0baf96406176a86d6b80bb165557070a0ee9cee2050b650a486f7d974439c2e2a8

Download Submit
C:\ProgramData\srtserv\sdata.dll

Filesize
23KB

MD5
4a68bdeb219f697115c035d5f7000ee4

SHA1
9b3e7baaceb706b5d4f3c682806a7e27603b32f2

SHA256
c505c9c35bc24243aabea8e349145c9dbff2da2ca6567fe2f750d887cc3cc27d

SHA512
b9305d262d08171df9b7c8f937c328953ce84b621cdf37ffc74b27d84f1bf364460dc6d4da40dbb94317980699fca8b7b8a9a58a409db74baba81546b0253a34

Download Submit
memory/1104-8-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1104-11-0x0000000000790000-0x0000000000791000-memory.dmp

Filesize
4KB

Download
memory/1104-10-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1104-18-0x0000000000830000-0x0000000000841000-memory.dmp

Filesize
68KB

Download
memory/1104-19-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1104-23-0x0000000000790000-0x0000000000791000-memory.dmp

Filesize
4KB

Download
memory/4644-0-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/4644-9-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/4644-1-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/4644-2-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download