5ab9966ab866322419e23ca16e5896f09c11d5fc015b5df584868ae38c1409bd

Analysis

max time kernel
147s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
05/01/2024, 10:48

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General

Target

437c490013741910e7a5b4445279416c.exe
Size

757KB
MD5

437c490013741910e7a5b4445279416c
SHA1

f8477cb2836411d1add6fc7ce55fed1d61624310
SHA256

5ab9966ab866322419e23ca16e5896f09c11d5fc015b5df584868ae38c1409bd
SHA512

741774e50624ce655bec9e4e162954e23dd50cdc042652e6877a86295ed70badba960d375039b14fa6de4e6e217bf2fcb421461eacb28ea8003f5e2940c7eb2e
SSDEEP

12288:njXipx70Np/Z9xwy/bAHmdtYpkzz84cNZcu0uAimaLV+qvTOHsGiE:jX1/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
behavioral1/files/0x002f000000015d81-19.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
2672	437c490013741910e7a5b4445279416c.exe

Loads dropped DLL 3 IoCs

pid	Process
2364	437c490013741910e7a5b4445279416c.exe
2364	437c490013741910e7a5b4445279416c.exe
2672	437c490013741910e7a5b4445279416c.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2672-21-0x0000000001DB0000-0x0000000001DC1000-memory.dmp	upx
behavioral1/files/0x002f000000015d81-19.dat	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\\437c490013741910e7a5b4445279416c.exe"	437c490013741910e7a5b4445279416c.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe

Modifies registry class 37 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 74003100000000008f5708711100557365727300600008000400efbeee3a851a8f5708712a000000e601000000000100000000000000000036000000000055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0 = 4a0031000000000025580f56102054656d700000360008000400efbe8f57087125580f562a000000ff010000000002000000000000000000000000000000540065006d007000000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4c003100000000008f57a773100041646d696e00380008000400efbe8f5708718f57a7732a00000031000000000003000000000000000000000000000000410064006d0069006e00000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0 = 860031000000000025580f5617003433374334397e3100006e0008000400efbe25580f5625580f562a0000005122010000000b00000000000000000000000000000034003300370063003400390030003000310033003700340031003900310030006500370061003500620034003400340035003200370039003400310036006300000018000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 52003100000000008f570871122041707044617461003c0008000400efbe8f5708718f5708712a000000eb0100000000020000000000000000000000000000004100700070004400610074006100000016000000	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_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-1-5-21-3818056530-936619650-3554021955-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0 = 4c003100000000008f57337210204c6f63616c00380008000400efbe8f5708718f5733722a000000fe0100000000020000000000000000000000000000004c006f00630061006c00000014000000	explorer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2672	437c490013741910e7a5b4445279416c.exe
2672	437c490013741910e7a5b4445279416c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2672	437c490013741910e7a5b4445279416c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2372	2364	437c490013741910e7a5b4445279416c.exe	30
PID 2364 wrote to memory of 2372	2364	437c490013741910e7a5b4445279416c.exe	30
PID 2364 wrote to memory of 2372	2364	437c490013741910e7a5b4445279416c.exe	30
PID 2364 wrote to memory of 2372	2364	437c490013741910e7a5b4445279416c.exe	30
PID 2364 wrote to memory of 2672	2364	437c490013741910e7a5b4445279416c.exe	29
PID 2364 wrote to memory of 2672	2364	437c490013741910e7a5b4445279416c.exe	29
PID 2364 wrote to memory of 2672	2364	437c490013741910e7a5b4445279416c.exe	29
PID 2364 wrote to memory of 2672	2364	437c490013741910e7a5b4445279416c.exe	29

C:\Users\Admin\AppData\Local\Temp\437c490013741910e7a5b4445279416c.exe
"C:\Users\Admin\AppData\Local\Temp\437c490013741910e7a5b4445279416c.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2364
- C:\ProgramData\srtserv\437c490013741910e7a5b4445279416c.exe
  C:\ProgramData\srtserv\437c490013741910e7a5b4445279416c.exe -wait
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2672
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe C:\Users\Admin\AppData\Local\Temp\437c490013741910e7a5b4445279416c
  2⤵
  PID:2372

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
PID:2688

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\437c490013741910e7a5b4445279416c.exe

Filesize
375KB

MD5
385cd9ae9574aaa10f37b5d515fcdd6c

SHA1
f0a5f89fecc5b8f233d60099b37d6b2770e3b23a

SHA256
8ce73b8225ab4ca21998cb1fb9d5b8fd26ce221b1dafc5e340febd7aaa630047

SHA512
accc7566b571e74d78876e87eb413926afe1cff091230b579d1ed20548c0120b0288359795f3d0d20bc543c4e9447a849e69b2e4599399b9c4a7888a55690784

Download Submit
\ProgramData\srtserv\437c490013741910e7a5b4445279416c.exe

Filesize
757KB

MD5
437c490013741910e7a5b4445279416c

SHA1
f8477cb2836411d1add6fc7ce55fed1d61624310

SHA256
5ab9966ab866322419e23ca16e5896f09c11d5fc015b5df584868ae38c1409bd

SHA512
741774e50624ce655bec9e4e162954e23dd50cdc042652e6877a86295ed70badba960d375039b14fa6de4e6e217bf2fcb421461eacb28ea8003f5e2940c7eb2e

Download Submit
\ProgramData\srtserv\sdata.dll

Filesize
23KB

MD5
4a68bdeb219f697115c035d5f7000ee4

SHA1
9b3e7baaceb706b5d4f3c682806a7e27603b32f2

SHA256
c505c9c35bc24243aabea8e349145c9dbff2da2ca6567fe2f750d887cc3cc27d

SHA512
b9305d262d08171df9b7c8f937c328953ce84b621cdf37ffc74b27d84f1bf364460dc6d4da40dbb94317980699fca8b7b8a9a58a409db74baba81546b0253a34

Download Submit
memory/2364-1-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/2364-12-0x0000000002D90000-0x0000000002E88000-memory.dmp

Filesize
992KB

Download
memory/2364-13-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/2364-0-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/2364-2-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2672-23-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/2672-17-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2672-16-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/2672-21-0x0000000001DB0000-0x0000000001DC1000-memory.dmp

Filesize
68KB

Download
memory/2672-22-0x00000000773FF000-0x0000000077400000-memory.dmp

Filesize
4KB

Download
memory/2672-27-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2672-26-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/2672-28-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/2688-14-0x0000000003800000-0x0000000003801000-memory.dmp

Filesize
4KB

Download
memory/2688-15-0x0000000003D10000-0x0000000003D20000-memory.dmp

Filesize
64KB

Download
memory/2688-25-0x0000000003800000-0x0000000003801000-memory.dmp

Filesize
4KB

Download