f2b3499121baba009f05137bca2ffaf7ad4d582621f36febf563c55974718dd6

Analysis

max time kernel
103s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
20/10/2022, 12:24

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General

Target

f2b3499121baba009f05137bca2ffaf7ad4d582621f36febf563c55974718dd6.dll
Size

260KB
MD5

96c79ea51c2beae60aa1e4881f3bd824
SHA1

47db43984d893fbcf363ce6a66ea94986925777e
SHA256

f2b3499121baba009f05137bca2ffaf7ad4d582621f36febf563c55974718dd6
SHA512

2aab23a13fc6bc791610e71c6f28ed262fe56de749d77e2d10f1d2bfededb061a4ed7b47cd7cae08053e43e30a6ceaae7e253d2a6c5b4330e28fcc03b654c3d1
SSDEEP

3072:sZmu9K33WSwdJ/tILtAPrL+oxdv9jD4Nn0LhlchQAItUkkH0jpgj7xIhVH/g:s8b33QqUrSqc0LDchQptQieVI//g

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3732	rundll32mgr.exe
1972	WaterMark.exe

UPX packed file 14 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3732-140-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3732-141-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3732-146-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/3732-145-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/1972-149-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/1972-153-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/1972-156-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/1972-154-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/3732-157-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/1972-158-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/1972-159-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/1972-160-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/1972-161-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral2/memory/1972-162-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px2AF8.tmp	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3096	2260	WerFault.exe	83

Modifies Internet Explorer settings 1 TTPs 29 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3285036753"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3134725247"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3134725247"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373183447"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991835"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{E4F377D7-51CE-11ED-AECB-DA88DC7FA106} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30991835"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991835"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe
1972	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3968	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3968	iexplore.exe
3968	iexplore.exe
4316	IEXPLORE.EXE
4316	IEXPLORE.EXE
4316	IEXPLORE.EXE
4316	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
3732	rundll32mgr.exe
1972	WaterMark.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 4912	1656	rundll32.exe	80
PID 1656 wrote to memory of 4912	1656	rundll32.exe	80
PID 1656 wrote to memory of 4912	1656	rundll32.exe	80
PID 4912 wrote to memory of 3732	4912	rundll32.exe	81
PID 4912 wrote to memory of 3732	4912	rundll32.exe	81
PID 4912 wrote to memory of 3732	4912	rundll32.exe	81
PID 3732 wrote to memory of 1972	3732	rundll32mgr.exe	82
PID 3732 wrote to memory of 1972	3732	rundll32mgr.exe	82
PID 3732 wrote to memory of 1972	3732	rundll32mgr.exe	82
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 2260	1972	WaterMark.exe	83
PID 1972 wrote to memory of 3968	1972	WaterMark.exe	85
PID 1972 wrote to memory of 3968	1972	WaterMark.exe	85
PID 1972 wrote to memory of 2964	1972	WaterMark.exe	86
PID 1972 wrote to memory of 2964	1972	WaterMark.exe	86
PID 3968 wrote to memory of 4316	3968	iexplore.exe	88
PID 3968 wrote to memory of 4316	3968	iexplore.exe	88
PID 3968 wrote to memory of 4316	3968	iexplore.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2b3499121baba009f05137bca2ffaf7ad4d582621f36febf563c55974718dd6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2b3499121baba009f05137bca2ffaf7ad4d582621f36febf563c55974718dd6.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:3732
  - - C:\Program Files (x86)\Microsoft\WaterMark.exe
      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:1972
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:2260
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2260 -s 208
        6⤵
        Program crash
        
        PID:3096
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3968
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3968 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4316
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        
        PID:2964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2260 -ip 2260
1⤵
PID:1996

Network

MITRE ATT&CK Enterprise v6

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:\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
117KB

MD5
8496f6a2cbd1e710149e098e047eaee2

SHA1
dd0a84f13d385928e5270ef9b4b442150fd4a060

SHA256
dfa3498dc41116db8aec3fd24721709e90248ad9de239222f1ed31f1f9286a03

SHA512
c7a58e158ff3fbfd2bf5e2327221f6f5d24fc7abef2b48da63e98ee96efb3ff0e9d8ce8047f34f3843f385ca0607ee85a5ca7e0a8e3330366a23e99c1d9e3dd5

Download Submit
C:\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
117KB

MD5
8496f6a2cbd1e710149e098e047eaee2

SHA1
dd0a84f13d385928e5270ef9b4b442150fd4a060

SHA256
dfa3498dc41116db8aec3fd24721709e90248ad9de239222f1ed31f1f9286a03

SHA512
c7a58e158ff3fbfd2bf5e2327221f6f5d24fc7abef2b48da63e98ee96efb3ff0e9d8ce8047f34f3843f385ca0607ee85a5ca7e0a8e3330366a23e99c1d9e3dd5

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
7550b85aee4221c59808672005ed8855

SHA1
aeb269eff06f518132b9ecea824523fa125ba2d2

SHA256
2b1c1e36c5419b7b3351aad8a08fee019473c832fe242ec2bf438b160d5eb8b2

SHA512
216d401cb461099f7d2f3626957800cba77308b790ec181e2affb97339570bb9e168a56f3264cad79cd60589637679728fb2a87199a91667dc3ccfd4117f2bab

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
434B

MD5
02b49e4e2df910337e1edef7571465a8

SHA1
4d73836e70305a908439b4ef05ec98fa707eea41

SHA256
54902246d0b830ec4bafda400f30cb8ad0ab94c88958ab007692f43d370168fd

SHA512
3459e1e759a0b81af42b1804ebf43d7403ab89bd636ea2dc419429d4e9cba81b13b28106012f8547ebc3903e3cb63e1443ae952cc87fd7a5f0d01ccd20d9cd63

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
117KB

MD5
8496f6a2cbd1e710149e098e047eaee2

SHA1
dd0a84f13d385928e5270ef9b4b442150fd4a060

SHA256
dfa3498dc41116db8aec3fd24721709e90248ad9de239222f1ed31f1f9286a03

SHA512
c7a58e158ff3fbfd2bf5e2327221f6f5d24fc7abef2b48da63e98ee96efb3ff0e9d8ce8047f34f3843f385ca0607ee85a5ca7e0a8e3330366a23e99c1d9e3dd5

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
117KB

MD5
8496f6a2cbd1e710149e098e047eaee2

SHA1
dd0a84f13d385928e5270ef9b4b442150fd4a060

SHA256
dfa3498dc41116db8aec3fd24721709e90248ad9de239222f1ed31f1f9286a03

SHA512
c7a58e158ff3fbfd2bf5e2327221f6f5d24fc7abef2b48da63e98ee96efb3ff0e9d8ce8047f34f3843f385ca0607ee85a5ca7e0a8e3330366a23e99c1d9e3dd5

Download Submit
memory/1972-160-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1972-154-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1972-161-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1972-162-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1972-159-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1972-158-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1972-149-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1972-153-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1972-156-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3732-145-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-157-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3732-146-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3732-141-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-140-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-137-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4912-133-0x0000000074ED0000-0x0000000074F13000-memory.dmp

Filesize
268KB

Download