4e44231509e426c10886a404e1c6e12c3d035588bda3940a9e1dfd2282acc268

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 15:33

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General

Target

b50c5c5357394901ba856b0d93d30697.exe
Size

25KB
MD5

b50c5c5357394901ba856b0d93d30697
SHA1

3339c604e9a86e8d4c648a42ac788fc25bf428b5
SHA256

4e44231509e426c10886a404e1c6e12c3d035588bda3940a9e1dfd2282acc268
SHA512

4683b98d43b78a38cf48d545df9649de8b3088ceabd6e3be6931a5f488d2f45ddbd68e6b98d2120328e339d4607230f49251fdbc100041e426caee727989ee23
SSDEEP

768:Ve/6d2fDN9xR+TxP7TdV/3+yi3JYIxy2:w/6wzL6FhOHJZV

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4424	bolivar30.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/264-0-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/files/0x00080000000231f7-4.dat	upx
behavioral2/memory/264-8-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\fm123.dat	bolivar30.exe
File created	\??\c:\windows\fm123.dat	bolivar30.exe
File opened for modification	\??\c:\windows\bolivar30.exe	bolivar30.exe
File opened for modification	\??\c:\windows\bolivar30.exe	b50c5c5357394901ba856b0d93d30697.exe
File created	\??\c:\windows\bolivar30.exe	b50c5c5357394901ba856b0d93d30697.exe

Modifies Internet Explorer settings 1 TTPs 29 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\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-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2113183834"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31092498"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31092498"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "416417762"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2113183834"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2156152036"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31092498"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{A98650A4-DB05-11EE-B3C6-6257B05D87B4} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\application/xhtml+xml\CLSID = "{25336920-03F9-11cf-8FD0-00AA00686F13}"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\application/xhtml+xml\Extension = ".xml"	regedit.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\application/xhtml+xml\Encoding = 08000000	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Mime\Database\Content Type\application/xhtml+xml	regedit.exe

Runs .reg file with regedit 1 IoCs

pid	Process
3000	regedit.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3884	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3884	iexplore.exe
3884	iexplore.exe
4704	IEXPLORE.EXE
4704	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 264 wrote to memory of 4424	264	b50c5c5357394901ba856b0d93d30697.exe	89
PID 264 wrote to memory of 4424	264	b50c5c5357394901ba856b0d93d30697.exe	89
PID 264 wrote to memory of 4424	264	b50c5c5357394901ba856b0d93d30697.exe	89
PID 264 wrote to memory of 1072	264	b50c5c5357394901ba856b0d93d30697.exe	91
PID 264 wrote to memory of 1072	264	b50c5c5357394901ba856b0d93d30697.exe	91
PID 264 wrote to memory of 1072	264	b50c5c5357394901ba856b0d93d30697.exe	91
PID 3884 wrote to memory of 4704	3884	iexplore.exe	95
PID 3884 wrote to memory of 4704	3884	iexplore.exe	95
PID 3884 wrote to memory of 4704	3884	iexplore.exe	95
PID 4424 wrote to memory of 3000	4424	bolivar30.exe	98
PID 4424 wrote to memory of 3000	4424	bolivar30.exe	98
PID 4424 wrote to memory of 3000	4424	bolivar30.exe	98
PID 4424 wrote to memory of 2388	4424	bolivar30.exe	107
PID 4424 wrote to memory of 2388	4424	bolivar30.exe	107
PID 4424 wrote to memory of 2388	4424	bolivar30.exe	107

C:\Users\Admin\AppData\Local\Temp\b50c5c5357394901ba856b0d93d30697.exe
"C:\Users\Admin\AppData\Local\Temp\b50c5c5357394901ba856b0d93d30697.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:264
- \??\c:\windows\bolivar30.exe
  c:\windows\bolivar30.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4424
- - \??\c:\windows\SysWOW64\regedit.exe
    regedit /s c:\1.reg
    3⤵
    - Modifies registry class
    - Runs .reg file with regedit
    PID:3000
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c c:\355674543.bat
    3⤵
    PID:2388
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c c:\355674543.bat
  2⤵
  PID:1072

C:\Program Files (x86)\Internet Explorer\ielowutil.exe
"C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
1⤵
PID:1984

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3884
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3884 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:4704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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\Local\Microsoft\Windows\INetCache\IE\6Y4OXOYV\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Windows\bolivar30.exe

Filesize
25KB

MD5
b50c5c5357394901ba856b0d93d30697

SHA1
3339c604e9a86e8d4c648a42ac788fc25bf428b5

SHA256
4e44231509e426c10886a404e1c6e12c3d035588bda3940a9e1dfd2282acc268

SHA512
4683b98d43b78a38cf48d545df9649de8b3088ceabd6e3be6931a5f488d2f45ddbd68e6b98d2120328e339d4607230f49251fdbc100041e426caee727989ee23

Download Submit
\??\c:\1.reg

Filesize
202B

MD5
428090d84a47f875c8fdd6d0258f00c5

SHA1
96c029720065ac1dc5ece2a5481b780267d7b439

SHA256
8c8668f6339728aebfc08e547f15b0e250f6a551be86f47fcb6098ffe37f0404

SHA512
f752bf52b359a5a82e821ee288e11cd4176c39ac3c932c6f44db69780c6e2597e654bbb3a9db9c32f8659d5af66fa9578b5625758b1f6db70c1314369dbadf7d

Download Submit
\??\c:\355674543.bat

Filesize
121B

MD5
bba669b4c4e488f95dcc5acaccbde5fa

SHA1
d4b568fb8ca1cdf0efe38d3a70b881e6d1b48242

SHA256
3efce31d9197516129b549e0c478fb38ec9cfede6d46e1cc3f039512f2e4415f

SHA512
298d78f0196754ece26e45bf280348626b6caff5f4368b4abafae3b467115bbdf12d5c3b1163de241f4198792c51dba31cd81e27f060a3cd989dcf4489f62827

Download Submit
\??\c:\355674543.bat

Filesize
213B

MD5
f5084eceb04a862006d8ad2f7f8488e7

SHA1
c49af1aa42146be1c4e0634dfe3eeaf8c1c1d4f7

SHA256
7cc549c7c2706fa78cd92830b6d21f276beac37f9e9a7cc3c5949829d1406ed3

SHA512
2d9af66a79016808bfb454b84e97ed12bb5609acaf0f980e3c7fd1852405a62aa85de73d49bab29719e04295bd099d71d358aaf9c906dd411761631f5979c6ec

Download Submit
memory/264-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/264-8-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download