d644b0d6ac1a29293dc2c4e47a56e94e14752272c1caafe850b2bb7a92d7568d

General

Target

8f7617b0e58d8baf0c07b4f889a88cd0.exe
Size

43KB
MD5

8f7617b0e58d8baf0c07b4f889a88cd0
SHA1

9f548a54af9e49ac0b5b41aeabddd39921253f4a
SHA256

d644b0d6ac1a29293dc2c4e47a56e94e14752272c1caafe850b2bb7a92d7568d
SHA512

48aeb5a6e2b356d0152de80eeb0cf1778617546abf42a9a9dbee4ff4d5277fedb7c844d115ecd9c0c55f36548101029370bb97804ead684351d87f3b7170d5aa
SSDEEP

768:ke9tQ7pPcYq8DpyRGX/lx4juUhDo2x4kfuBaGtymH/yLSCzMUx:j4kYq8cwXfkfh+kfOa3g4rx

Score

8^/10

adware persistence stealer upx

Malware Config

Signatures

Modifies Installed Components in the registry 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0EA88F0F-B698-4ab1-8DBC-EBE2CD00927F}\Version = "4,3,6,3"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0EA88F0F-B698-4ab1-8DBC-EBE2CD00927F}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0EA88F0F-B698-4ab1-8DBC-EBE2CD00927F}\ = "DCOM service"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0EA88F0F-B698-4ab1-8DBC-EBE2CD00927F}\Locale = "EN"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0EA88F0F-B698-4ab1-8DBC-EBE2CD00927F}\StubPath = "rundll32 aj32.dll,InitO"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0EA88F0F-B698-4ab1-8DBC-EBE2CD00927F}\IsInstalled = "1"	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000600000002311b-3.dat	acprotect

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	8f7617b0e58d8baf0c07b4f889a88cd0.exe

Loads dropped DLL 1 IoCs

pid	Process
4464	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000600000002311b-3.dat	upx
behavioral2/memory/4464-5-0x0000000020000000-0x000000002001E000-memory.dmp	upx
behavioral2/memory/4464-6-0x0000000020000000-0x000000002001E000-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	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}	8f7617b0e58d8baf0c07b4f889a88cd0.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\lp	8f7617b0e58d8baf0c07b4f889a88cd0.exe
File created	C:\Windows\SysWOW64\aj32.dll	8f7617b0e58d8baf0c07b4f889a88cd0.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\inform.dat	8f7617b0e58d8baf0c07b4f889a88cd0.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes"	8f7617b0e58d8baf0c07b4f889a88cd0.exe

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}\ProgID\ = "Jmc"	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}\ = "Google plugin"	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}\InprocServer32\ = "aj32.dll"	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}\InprocServer32\ThreadingModel = "Apartment"	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}\TypeLib	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}\TypeLib\ = "{45C654DF-19D8-49fb-9027-57DEFE7F5FA3}"	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}\InprocServer32	8f7617b0e58d8baf0c07b4f889a88cd0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{085E2757-F41D-42d1-B4CC-9DADF7113BBC}\ProgID	8f7617b0e58d8baf0c07b4f889a88cd0.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 4464	2872	8f7617b0e58d8baf0c07b4f889a88cd0.exe	84
PID 2872 wrote to memory of 4464	2872	8f7617b0e58d8baf0c07b4f889a88cd0.exe	84
PID 2872 wrote to memory of 4464	2872	8f7617b0e58d8baf0c07b4f889a88cd0.exe	84
PID 2872 wrote to memory of 1108	2872	8f7617b0e58d8baf0c07b4f889a88cd0.exe	85
PID 2872 wrote to memory of 1108	2872	8f7617b0e58d8baf0c07b4f889a88cd0.exe	85
PID 2872 wrote to memory of 1108	2872	8f7617b0e58d8baf0c07b4f889a88cd0.exe	85

C:\Users\Admin\AppData\Local\Temp\8f7617b0e58d8baf0c07b4f889a88cd0.exe
"C:\Users\Admin\AppData\Local\Temp\8f7617b0e58d8baf0c07b4f889a88cd0.exe"
1⤵
- Checks computer location settings
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\System32\rundll32.exe" aj32.dll,ID
  2⤵
  - Modifies Installed Components in the registry
  - Loads dropped DLL
  PID:4464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\8F7617~1.EXE >> NUL
  2⤵
  PID:1108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Browser Extensions

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\aj32.dll

Filesize
33KB

MD5
91ca1f7a687ae01f3db5d18101c1dd57

SHA1
7a2adab1f5aeb3577c5d4ee42ea95c42743bfc05

SHA256
49ac0599460ced7dda36a580a396ee2b7ec3a2dc97aab491a2cf857db570bbcf

SHA512
bef108ca3dfd418c448c5345ff9b68e3b9f1678edb86f6642639fc8e54fbfadab11244c115086aca713cacfd8e7c4450551921db0b1d96dd5505d26ea26dd481

Download Submit
memory/4464-5-0x0000000020000000-0x000000002001E000-memory.dmp

Filesize
120KB

Download
memory/4464-6-0x0000000020000000-0x000000002001E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads