c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069

Analysis

max time kernel
206s
max time network
225s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2022, 13:17

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General

Target

c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe
Size

168KB
MD5

86199759bd758d2afd7a48930a52d9e5
SHA1

15d39bfc6dc27cafed9992cca498ed57f85f9255
SHA256

c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069
SHA512

8eab695b954a984679690b627a95a748085f1e28716b1f5a7b0ebb87a8e93c485e6e8f05cff4f9a67b08ec3bfdf4b4a8822938572ee8c62e043b119dad2c8bcd
SSDEEP

3072:IyWVsYNP0kKBQnGuDPyhltDCbTO+0o8aiGVx+4qrVGq1Ywt:Is8nR7+h4liGX+1rVGq1

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3252	Bkjajb.exe
4864	Bkjajb.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bkjajb = "C:\\Users\\Admin\\AppData\\Roaming\\Bkjajb.exe"	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1888 set thread context of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 3252 set thread context of 4864	3252	Bkjajb.exe	87

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31000967"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31000967"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1097544753"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{63BAFFD8-757A-11ED-BF5F-DE9E83FE850F} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1097544753"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "377105395"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4620	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe
4620	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4864	Bkjajb.exe
Token: SeDebugPrivilege	3972	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4388	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4388	IEXPLORE.EXE
4388	IEXPLORE.EXE
3972	IEXPLORE.EXE
3972	IEXPLORE.EXE
3972	IEXPLORE.EXE
3972	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 1888 wrote to memory of 4620	1888	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	84
PID 4620 wrote to memory of 3252	4620	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	85
PID 4620 wrote to memory of 3252	4620	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	85
PID 4620 wrote to memory of 3252	4620	c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe	85
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 3252 wrote to memory of 4864	3252	Bkjajb.exe	87
PID 4864 wrote to memory of 2000	4864	Bkjajb.exe	89
PID 4864 wrote to memory of 2000	4864	Bkjajb.exe	89
PID 4864 wrote to memory of 2000	4864	Bkjajb.exe	89
PID 2000 wrote to memory of 4388	2000	iexplore.exe	90
PID 2000 wrote to memory of 4388	2000	iexplore.exe	90
PID 4388 wrote to memory of 3972	4388	IEXPLORE.EXE	92
PID 4388 wrote to memory of 3972	4388	IEXPLORE.EXE	92
PID 4388 wrote to memory of 3972	4388	IEXPLORE.EXE	92
PID 4864 wrote to memory of 3972	4864	Bkjajb.exe	92
PID 4864 wrote to memory of 3972	4864	Bkjajb.exe	92

C:\Users\Admin\AppData\Local\Temp\c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe
"C:\Users\Admin\AppData\Local\Temp\c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1888
- C:\Users\Admin\AppData\Local\Temp\c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe
  "C:\Users\Admin\AppData\Local\Temp\c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4620
- - C:\Users\Admin\AppData\Roaming\Bkjajb.exe
    "C:\Users\Admin\AppData\Roaming\Bkjajb.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3252
  - - C:\Users\Admin\AppData\Roaming\Bkjajb.exe
      "C:\Users\Admin\AppData\Roaming\Bkjajb.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4864
    - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
        
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2000
      - C:\Program Files\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4388
        
        C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4388 CREDAT:17410 /prefetch:2
        7⤵
        Modifies Internet Explorer settings
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:3972

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

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

C:\Users\Admin\AppData\Roaming\Bkjajb.exe

Filesize
168KB

MD5
86199759bd758d2afd7a48930a52d9e5

SHA1
15d39bfc6dc27cafed9992cca498ed57f85f9255

SHA256
c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069

SHA512
8eab695b954a984679690b627a95a748085f1e28716b1f5a7b0ebb87a8e93c485e6e8f05cff4f9a67b08ec3bfdf4b4a8822938572ee8c62e043b119dad2c8bcd

Download Submit
C:\Users\Admin\AppData\Roaming\Bkjajb.exe

Filesize
168KB

MD5
86199759bd758d2afd7a48930a52d9e5

SHA1
15d39bfc6dc27cafed9992cca498ed57f85f9255

SHA256
c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069

SHA512
8eab695b954a984679690b627a95a748085f1e28716b1f5a7b0ebb87a8e93c485e6e8f05cff4f9a67b08ec3bfdf4b4a8822938572ee8c62e043b119dad2c8bcd

Download Submit
C:\Users\Admin\AppData\Roaming\Bkjajb.exe

Filesize
168KB

MD5
86199759bd758d2afd7a48930a52d9e5

SHA1
15d39bfc6dc27cafed9992cca498ed57f85f9255

SHA256
c62adca75fef1bb4e50cfeb13ac43c22d1a445799eb58bf8ff8dd372d7e59069

SHA512
8eab695b954a984679690b627a95a748085f1e28716b1f5a7b0ebb87a8e93c485e6e8f05cff4f9a67b08ec3bfdf4b4a8822938572ee8c62e043b119dad2c8bcd

Download Submit
memory/1888-132-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1888-137-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1888-133-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3252-147-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3252-143-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4620-139-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4620-138-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4620-135-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4620-151-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4864-150-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4864-152-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4864-153-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download