2121f815d46f459bbc08520f476dfcd518fbf9456e4c2c203f6b27296ccea3b4

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 00:11

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General

Target

a0b5283fcaa4370f1e0cf501c76c85bb.dll
Size

240KB
MD5

a0b5283fcaa4370f1e0cf501c76c85bb
SHA1

8ec1343363fd0086fd489a50132b4b66676daed9
SHA256

2121f815d46f459bbc08520f476dfcd518fbf9456e4c2c203f6b27296ccea3b4
SHA512

f136f41d9d0e777098a58ed291b3c05f802b4ffcf30a93026411f7f296485ecc447603666f0fcdef20841b09c167c771b1cfcf25724c2ef0097e730fb227f2d3
SSDEEP

6144:MAvfiNTtQF0GqKdBaC5UB84P0sKVPgXeQ8YtQ5/f5B68/nX:MA3iNBvaWO4/KmWYM/z68f

Score

7^/10

adware stealer upx

Malware Config

Signatures

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2208-0-0x0000000000140000-0x00000000001E0000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{70C4C00B-DF92-4670-B691-8A7089F7151D}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{70C4C00B-DF92-4670-B691-8A7089F7151D}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{70C4C00B-DF92-4670-B691-8A7089F7151D}\ = "Dual Matching"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{70C4C00B-DF92-4670-B691-8A7089F7151D}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{70C4C00B-DF92-4670-B691-8A7089F7151D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a0b5283fcaa4370f1e0cf501c76c85bb.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{70C4C00B-DF92-4670-B691-8A7089F7151D}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{70C4C00B-DF92-4670-B691-8A7089F7151D}	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 2208	2732	regsvr32.exe	28
PID 2732 wrote to memory of 2208	2732	regsvr32.exe	28
PID 2732 wrote to memory of 2208	2732	regsvr32.exe	28
PID 2732 wrote to memory of 2208	2732	regsvr32.exe	28
PID 2732 wrote to memory of 2208	2732	regsvr32.exe	28
PID 2732 wrote to memory of 2208	2732	regsvr32.exe	28
PID 2732 wrote to memory of 2208	2732	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\a0b5283fcaa4370f1e0cf501c76c85bb.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\a0b5283fcaa4370f1e0cf501c76c85bb.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

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

memory/2208-0-0x0000000000140000-0x00000000001E0000-memory.dmp

Filesize
640KB

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memory/2208-1-0x0000000000140000-0x00000000001E0000-memory.dmp

Filesize
640KB

Download