3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e

General

Target

3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
Size

45KB
MD5

a4820e31edf0539a7dc76f67192cf4f0
SHA1

f8c331463fdb182dfec066034d349ca62515144d
SHA256

3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e
SHA512

d9c9695f4d18f38868a35a8c6f9271d9db7c0090e90a75022f1ca3788970e4015650e33c810d2677dd12657fa8cc479cd08b516f40550b8b028fb18842be0f5f
SSDEEP

768:O3akCUHqGKKJjHumIThkvSxN0ivpeXRgB/1H5X:pJG3RHuFTUCN0kppN

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\Web Event Logger = "{79FEACFF-FFCE-815E-A900-316290B5B738}"	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe

Executes dropped EXE 1 IoCs

Processes:

Bjfaeh32.exe

pid process

4620 Bjfaeh32.exe

pid	process
4620	Bjfaeh32.exe

Drops file in System32 directory 3 IoCs

Processes:

3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe

description	ioc	process
File created	C:\Windows\SysWOW64\Ndhkdnkh.dll	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
File created	C:\Windows\SysWOW64\Bjfaeh32.exe	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
File opened for modification	C:\Windows\SysWOW64\Bjfaeh32.exe	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe

Modifies data under HKEY_USERS 2 IoCs

Processes:

Bjfaeh32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess\BrowseNewProcess = "yes"	Bjfaeh32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess	Bjfaeh32.exe

Modifies registry class 6 IoCs

Processes:

3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32\ = "C:\\Windows\\SysWow64\\Ndhkdnkh.dll"	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32\ThreadingModel = "Apartment"	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Bjfaeh32.exe

pid process

4620 Bjfaeh32.exe

pid	process
4620	Bjfaeh32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe

description	pid	process	target process
PID 3136 wrote to memory of 4620	3136	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe	Bjfaeh32.exe
PID 3136 wrote to memory of 4620	3136	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe	Bjfaeh32.exe
PID 3136 wrote to memory of 4620	3136	3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe	Bjfaeh32.exe

C:\Users\Admin\AppData\Local\Temp\3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe
"C:\Users\Admin\AppData\Local\Temp\3854b8e11aa2068647f7494f0e411800dbe8a807f5f0968b7de3e108b718730e.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3136

C:\Windows\SysWOW64\Bjfaeh32.exe
C:\Windows\system32\Bjfaeh32.exe
2⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
- Suspicious behavior: GetForegroundWindowSpam
PID:4620

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\Bjfaeh32.exe
Filesize
45KB

MD5
3aca3b9635b437d5ad6376e3b820dfba

SHA1
1554a3b93dc013e5401cbf5f78ec560e4323e6d8

SHA256
feb663a8bc875fce02464a95dedd627d3b65bce81e4485fdfb05c4d53a7cf452

SHA512
a95e1531ecbc0be5a8aed54670ad20b904a713daf80198ea52e3645f4390c0b8de987ae9b02d072c499d5b26bf28bc9ff561d927368e78e3552d6a1dd1c105bd

Download Submit
C:\Windows\SysWOW64\Bjfaeh32.exe
Filesize
45KB

MD5
3aca3b9635b437d5ad6376e3b820dfba

SHA1
1554a3b93dc013e5401cbf5f78ec560e4323e6d8

SHA256
feb663a8bc875fce02464a95dedd627d3b65bce81e4485fdfb05c4d53a7cf452

SHA512
a95e1531ecbc0be5a8aed54670ad20b904a713daf80198ea52e3645f4390c0b8de987ae9b02d072c499d5b26bf28bc9ff561d927368e78e3552d6a1dd1c105bd

Download Submit
memory/3136-132-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3136-137-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4620-133-0x0000000000000000-mapping.dmp

Download
memory/4620-136-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4620-138-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads