81134622ef48e098ac89fc5853d3a1d29835f2dd6a3c12e7b2e052cc6a810f67

Analysis

max time kernel
135s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03-10-2022 04:53

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General

Target

81134622ef48e098ac89fc5853d3a1d29835f2dd6a3c12e7b2e052cc6a810f67.dll
Size

274KB
MD5

60b03b9f62ef74c05816ab658a4bb420
SHA1

1977cac573a88dfd084d5795a06652e566dd5183
SHA256

81134622ef48e098ac89fc5853d3a1d29835f2dd6a3c12e7b2e052cc6a810f67
SHA512

6de71442e793abf66d9adf6d75a4db31b1b00515c52240471f9fc1be93adc206e1750c224af90e757d35547997b2f34bea0a1d7bdf45f52a5da1fe4f55b7c903
SSDEEP

6144:RatuZySlWDRI0jcAwcwypEGmFPHrA/8/5mB+9dnO6OJJVMs:R5yd3EcbpEGmFPVkBOO1Ms

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2108	rundll32mgr.exe
3820	WaterMark.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2108-141-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3820-146-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3820-147-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3820-148-0x0000000000400000-0x0000000000421000-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 created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxAEC3.tmp	rundll32mgr.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2304	1816	WerFault.exe	88

Modifies Internet Explorer settings 1 TTPs 38 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371665427"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1809609400"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30988301"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30988301"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3e0000003e000000c4040000a3020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1809609400"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{8001DF69-4400-11ED-B696-4A8324823CC0} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{80020679-4400-11ED-B696-4A8324823CC0} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe
3820	WaterMark.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3392	iexplore.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3820	WaterMark.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3392	iexplore.exe
4008	iexplore.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
4008	iexplore.exe
4008	iexplore.exe
3392	iexplore.exe
3392	iexplore.exe
4660	IEXPLORE.EXE
4660	IEXPLORE.EXE
4620	IEXPLORE.EXE
4620	IEXPLORE.EXE
4660	IEXPLORE.EXE
4660	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 5080	4988	rundll32.exe	85
PID 4988 wrote to memory of 5080	4988	rundll32.exe	85
PID 4988 wrote to memory of 5080	4988	rundll32.exe	85
PID 5080 wrote to memory of 2108	5080	rundll32.exe	86
PID 5080 wrote to memory of 2108	5080	rundll32.exe	86
PID 5080 wrote to memory of 2108	5080	rundll32.exe	86
PID 2108 wrote to memory of 3820	2108	rundll32mgr.exe	87
PID 2108 wrote to memory of 3820	2108	rundll32mgr.exe	87
PID 2108 wrote to memory of 3820	2108	rundll32mgr.exe	87
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 1816	3820	WaterMark.exe	88
PID 3820 wrote to memory of 3392	3820	WaterMark.exe	91
PID 3820 wrote to memory of 3392	3820	WaterMark.exe	91
PID 3820 wrote to memory of 4008	3820	WaterMark.exe	92
PID 3820 wrote to memory of 4008	3820	WaterMark.exe	92
PID 4008 wrote to memory of 4620	4008	iexplore.exe	94
PID 4008 wrote to memory of 4620	4008	iexplore.exe	94
PID 4008 wrote to memory of 4620	4008	iexplore.exe	94
PID 3392 wrote to memory of 4660	3392	iexplore.exe	95
PID 3392 wrote to memory of 4660	3392	iexplore.exe	95
PID 3392 wrote to memory of 4660	3392	iexplore.exe	95

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\81134622ef48e098ac89fc5853d3a1d29835f2dd6a3c12e7b2e052cc6a810f67.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\81134622ef48e098ac89fc5853d3a1d29835f2dd6a3c12e7b2e052cc6a810f67.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:5080
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:2108
  - - 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 WriteProcessMemory
      PID:3820
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:1816
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 204
        6⤵
        Program crash
        
        PID:2304
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3392
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3392 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4660
    - - 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:4008
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4008 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1816 -ip 1816
1⤵
PID:2028

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
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{8001DF69-4400-11ED-B696-4A8324823CC0}.dat

Filesize
3KB

MD5
f13f6e8bdeba59e1303836f9e7e55b46

SHA1
9250211acaa0e64e4e28261756b439d55d315ee1

SHA256
0ffa7b2e24c1cfd3faeaf6b372b0580dd3044a93229499b232ccc1cc3a6f8bff

SHA512
e207e95140ab62d92f69b8a7fb4547f72c28688603849a5abe2d804e3f7fcef4b094a71293d885c5ee93c8151021f25d01861e87237cf1b69412c219ff8d11b4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{80020679-4400-11ED-B696-4A8324823CC0}.dat

Filesize
3KB

MD5
abf14939993275b5d2838bfea58dcb8e

SHA1
0d3a22bb7bd413af5a6d5cb8d83cb4c9cb32a16d

SHA256
96823fd8ca223b68cd7645cd771e6393a3236261140b7d3d4a2c142abf1f41db

SHA512
64eb5b136442b6134d81756386a9324ea273048160ef05b75f26fe50b06183e1e35df283d23115045e5a7d5f15ba7ea16681ee0abdcf8620728994e7378e79f0

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

Download Submit
memory/1816-144-0x0000000000000000-mapping.dmp

Download
memory/2108-133-0x0000000000000000-mapping.dmp

Download
memory/2108-137-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2108-141-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2108-142-0x0000000000470000-0x0000000000491000-memory.dmp

Filesize
132KB

Download
memory/3820-145-0x0000000000570000-0x0000000000591000-memory.dmp

Filesize
132KB

Download
memory/3820-146-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3820-147-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3820-148-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3820-138-0x0000000000000000-mapping.dmp

Download
memory/5080-132-0x0000000000000000-mapping.dmp

Download
memory/5080-136-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download