57976b98902405b1d234ac78266e607b1d111cf88ff9e5cc783c4ed84e86736b

Analysis

max time kernel
146s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/12/2023, 22:43

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General

Target

05f73342210e408846e95871ad1bac57.exe
Size

116KB
MD5

05f73342210e408846e95871ad1bac57
SHA1

945ea0e24be3c408a348c103a03601c0671b4f11
SHA256

57976b98902405b1d234ac78266e607b1d111cf88ff9e5cc783c4ed84e86736b
SHA512

831cf35cd743cd28fdd828824a9abd83db2207c8c732565001d61a22b54a8da17c70b50b353d3fc42c1afd42974482f95eb169d5e413f7d076cd2c36189ab0c1
SSDEEP

3072:YBtnE5oBiXogUKr6M64SUmlHIXgRjEJ4sSFBfQ9ZTV:B5oMMv+Xcj0O7f0f

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4732	Brjijj.exe
376	Brjijj.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Brjijj = "C:\\Users\\Admin\\AppData\\Roaming\\Brjijj.exe"	05f73342210e408846e95871ad1bac57.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 864 set thread context of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 4732 set thread context of 376	4732	Brjijj.exe	100

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3581198662"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3605730266"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3581198662"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31079134"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31079134"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "410678115"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{00FCE81C-A6D2-11EE-9ECD-72AC86130FB1} = "0"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3605730266"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31079134"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31079134"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1500	05f73342210e408846e95871ad1bac57.exe
1500	05f73342210e408846e95871ad1bac57.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	376	Brjijj.exe
Token: SeDebugPrivilege	4368	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
620	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
620	IEXPLORE.EXE
620	IEXPLORE.EXE
4368	IEXPLORE.EXE
4368	IEXPLORE.EXE
4368	IEXPLORE.EXE
4368	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 864 wrote to memory of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 864 wrote to memory of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 864 wrote to memory of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 864 wrote to memory of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 864 wrote to memory of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 864 wrote to memory of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 864 wrote to memory of 1500	864	05f73342210e408846e95871ad1bac57.exe	89
PID 1500 wrote to memory of 4732	1500	05f73342210e408846e95871ad1bac57.exe	99
PID 1500 wrote to memory of 4732	1500	05f73342210e408846e95871ad1bac57.exe	99
PID 1500 wrote to memory of 4732	1500	05f73342210e408846e95871ad1bac57.exe	99
PID 4732 wrote to memory of 376	4732	Brjijj.exe	100
PID 4732 wrote to memory of 376	4732	Brjijj.exe	100
PID 4732 wrote to memory of 376	4732	Brjijj.exe	100
PID 4732 wrote to memory of 376	4732	Brjijj.exe	100
PID 4732 wrote to memory of 376	4732	Brjijj.exe	100
PID 4732 wrote to memory of 376	4732	Brjijj.exe	100
PID 4732 wrote to memory of 376	4732	Brjijj.exe	100
PID 4732 wrote to memory of 376	4732	Brjijj.exe	100
PID 376 wrote to memory of 1396	376	Brjijj.exe	104
PID 376 wrote to memory of 1396	376	Brjijj.exe	104
PID 376 wrote to memory of 1396	376	Brjijj.exe	104
PID 1396 wrote to memory of 620	1396	iexplore.exe	105
PID 1396 wrote to memory of 620	1396	iexplore.exe	105
PID 620 wrote to memory of 4368	620	IEXPLORE.EXE	106
PID 620 wrote to memory of 4368	620	IEXPLORE.EXE	106
PID 620 wrote to memory of 4368	620	IEXPLORE.EXE	106
PID 376 wrote to memory of 4368	376	Brjijj.exe	106
PID 376 wrote to memory of 4368	376	Brjijj.exe	106

C:\Users\Admin\AppData\Local\Temp\05f73342210e408846e95871ad1bac57.exe
"C:\Users\Admin\AppData\Local\Temp\05f73342210e408846e95871ad1bac57.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:864
- C:\Users\Admin\AppData\Local\Temp\05f73342210e408846e95871ad1bac57.exe
  C:\Users\Admin\AppData\Local\Temp\05f73342210e408846e95871ad1bac57.exe
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1500
- - C:\Users\Admin\AppData\Roaming\Brjijj.exe
    "C:\Users\Admin\AppData\Roaming\Brjijj.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4732
  - - C:\Users\Admin\AppData\Roaming\Brjijj.exe
      C:\Users\Admin\AppData\Roaming\Brjijj.exe
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:376
    - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
        
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1396
      - 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:620
        
        C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:620 CREDAT:17410 /prefetch:2
        7⤵
        Modifies Internet Explorer settings
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:4368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\Local\Microsoft\Internet Explorer\VersionManager\ver38ED.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\ISEWAASI\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
116KB

MD5
05f73342210e408846e95871ad1bac57

SHA1
945ea0e24be3c408a348c103a03601c0671b4f11

SHA256
57976b98902405b1d234ac78266e607b1d111cf88ff9e5cc783c4ed84e86736b

SHA512
831cf35cd743cd28fdd828824a9abd83db2207c8c732565001d61a22b54a8da17c70b50b353d3fc42c1afd42974482f95eb169d5e413f7d076cd2c36189ab0c1

Download Submit
memory/376-20-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/376-22-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/864-3-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/864-0-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1500-4-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1500-12-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1500-5-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1500-1-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4732-18-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4732-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download