be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b

Analysis

max time kernel
91s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
01/12/2022, 18:30

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General

Target

be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe
Size

306KB
MD5

b4d31796460de48099b671560fcc3499
SHA1

f461422b898da0e0c2f5154e8af4f17889011fd0
SHA256

be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b
SHA512

c9bcdf8edd7af02e154e53035817561f1c5a4a7801d73a884f41d79ce253756d063d89bbc68b0af37e41efa12288c28b374aa0a4a069e69c7a18f0e764a41f14
SSDEEP

6144:YOUyfOlOeb65u5BLxllHFh36pST6pz7FvAuHSX:YOUyCmA5BLbZLqQT65SX

Score

8^/10

adware persistence stealer

Malware Config

Signatures

Sets file execution options in registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe\Debugger = "C:\\Windows\\system32\\ctfmonzyp.exe"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe	regsvr32.exe

Loads dropped DLL 1 IoCs

pid	Process
1964	regsvr32.exe

Installs/modifies Browser Helper Object 2 TTPs 3 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	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{EAC1B500-7864-3DA6-99F0-35361D557923}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{EAC1B500-7864-3DA6-99F0-35361D557923}\IExplore = "1"	regsvr32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ctfmonzyp.exe	regsvr32.exe
File created	C:\Windows\SysWOW64\la49859.dll	be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe

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

System Information Discovery
T1082

Modifies registry class 41 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\ = "LIB"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\ProgID\ = "D.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\InprocServer32\ = "C:\\Windows\\SysWow64\\la49859.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ = "IDOMPeek"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\VersionIndependentProgID\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\la49859.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\HELPDIR\ = "C:\\Windows\\SysWow64\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ = "IDOMPeek"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib\ = "{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}\TypeLib\ = "{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{EAC1B500-7864-3DA6-99F0-35361D557923}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{EAC1B500-7864-3DA6-99F0-35361D557923}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EAC1B500-7864-3DA6-99F0-35361D557923}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D5C191D3-DB74-3A8C-83B7-841E8D34FB2C}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9E33E0D3-5E99-3F42-A954-93031F8587DA}	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 1964	1368	be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe	27
PID 1368 wrote to memory of 1964	1368	be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe	27
PID 1368 wrote to memory of 1964	1368	be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe	27
PID 1368 wrote to memory of 1964	1368	be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe	27
PID 1368 wrote to memory of 1964	1368	be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe	27
PID 1368 wrote to memory of 1964	1368	be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe	27
PID 1368 wrote to memory of 1964	1368	be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe	27

C:\Users\Admin\AppData\Local\Temp\be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe
"C:\Users\Admin\AppData\Local\Temp\be9eb79afcf743a7cce147f8597de824a3801405058ebe5f1c93a3e2be8ed46b.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\SysWOW64\regsvr32.exe
  "C:\Windows\System32\regsvr32.exe" /s C:\Windows\system32\la49859.dll
  2⤵
  - Sets file execution options in registry
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  PID:1964

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

T1176

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\la49859.dll

Filesize
240KB

MD5
44a68340ef53f83e8fb0ffc33ab7e115

SHA1
c0ec550b3ed6aafc362fe552896a3e9dc4f81b04

SHA256
52f6b0377503192d6509e3a560453e16c0128594c1be5503836e1bc58c7913fe

SHA512
64088819d94e0d8245fd4a16a2104898e254204fa23797b0b133c1b3e6a13c7b1d262ba0a7710535573a2eddd2966b10ff8e761ecd143820387a221c7c0ab130

Download Submit
\Windows\SysWOW64\la49859.dll

Filesize
240KB

MD5
44a68340ef53f83e8fb0ffc33ab7e115

SHA1
c0ec550b3ed6aafc362fe552896a3e9dc4f81b04

SHA256
52f6b0377503192d6509e3a560453e16c0128594c1be5503836e1bc58c7913fe

SHA512
64088819d94e0d8245fd4a16a2104898e254204fa23797b0b133c1b3e6a13c7b1d262ba0a7710535573a2eddd2966b10ff8e761ecd143820387a221c7c0ab130

Download Submit
memory/1368-54-0x0000000074E41000-0x0000000074E43000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads