cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8

Analysis

max time kernel
141s
max time network
164s
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, 19:15

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General

Target
cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8.exe
Size 1.0MB
Sample221003-xyn5nscbc6
SHA256 cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8
MD5 428c0de022f837a8a8d2f3876edb6000
SHA1 3a2b577d6703a6358168a148fea9d1f5528cbb3c
SHA512 12ae4c9cb175af43b3a26398db20a04eeab50b4020fb94f0b7cd311965395f563684b49f15e965b576ad1038a8e2cb9a09cc1d5f46e5686e3aec4a135077a452
SSDEEP 24576:2Gt+igEhxI9qg8RVMdEU5vNYGp7oS7C+/kjar:QWsqjzMdNNY7i
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1044	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe
3404	WaterMark.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1044-138-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/1044-139-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/1044-147-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3404-151-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/3404-152-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/3404-153-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/3404-154-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/3404-155-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/3404-156-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/3404-157-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxBC02.tmp	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3900	4848	WerFault.exe	83

Modifies Internet Explorer settings 1 TTPs 26 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{09C2864C-436E-11ED-B696-DA88DC7FA106} = "0"	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 (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30988154"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371602515"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	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\WindowsSearch	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\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	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\PendingRecovery	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
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3802275866"	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 = "3802275866"	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
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30988154"	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

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe
3404	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3404	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
452	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
452	iexplore.exe
452	iexplore.exe
4224	IEXPLORE.EXE
4224	IEXPLORE.EXE
4224	IEXPLORE.EXE
4224	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1044	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe
3404	WaterMark.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 1044	1048	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8.exe	81
PID 1048 wrote to memory of 1044	1048	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8.exe	81
PID 1048 wrote to memory of 1044	1048	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8.exe	81
PID 1044 wrote to memory of 3404	1044	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe	82
PID 1044 wrote to memory of 3404	1044	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe	82
PID 1044 wrote to memory of 3404	1044	cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe	82
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 4848	3404	WaterMark.exe	83
PID 3404 wrote to memory of 452	3404	WaterMark.exe	87
PID 3404 wrote to memory of 452	3404	WaterMark.exe	87
PID 3404 wrote to memory of 1644	3404	WaterMark.exe	88
PID 3404 wrote to memory of 1644	3404	WaterMark.exe	88
PID 452 wrote to memory of 4224	452	iexplore.exe	89
PID 452 wrote to memory of 4224	452	iexplore.exe	89
PID 452 wrote to memory of 4224	452	iexplore.exe	89

C:\Users\Admin\AppData\Local\Temp\cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8.exe
"C:\Users\Admin\AppData\Local\Temp\cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Local\Temp\cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe
  C:\Users\Admin\AppData\Local\Temp\cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:1044
- - C:\Program Files (x86)\Microsoft\WaterMark.exe
    "C:\Program Files (x86)\Microsoft\WaterMark.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:3404
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      PID:4848
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4848 -s 208
        5⤵
        Program crash
        
        PID:3900
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:452
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:452 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4224
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      PID:1644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4848 -ip 4848
1⤵
PID:4796

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

WaterMark.exe

Path C:\Program Files (x86)\Microsoft\WaterMark.exe
Size 59KB
SHA256 5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd
MD5 0e0f0ae845d89c22bb6385f64a6b85fd
SHA1 0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac
SHA512 baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350
SSDEEP 768:W06R0UKzOgnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9L:0R0vxn3Pc0LCH9MtbvabUDzJYWu3BU
MD5 SHA1 SHA512 SSDEEP

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WaterMark.exe

Path C:\Program Files (x86)\Microsoft\WaterMark.exe
Size 59KB
SHA256 5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd
MD5 0e0f0ae845d89c22bb6385f64a6b85fd
SHA1 0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac
SHA512 baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350
SSDEEP 768:W06R0UKzOgnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9L:0R0vxn3Pc0LCH9MtbvabUDzJYWu3BU
MD5 SHA1 SHA512 SSDEEP

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cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe

Path C:\Users\Admin\AppData\Local\Temp\cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe
Size 59KB
SHA256 5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd
MD5 0e0f0ae845d89c22bb6385f64a6b85fd
SHA1 0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac
SHA512 baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350
SSDEEP 768:W06R0UKzOgnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9L:0R0vxn3Pc0LCH9MtbvabUDzJYWu3BU
MD5 SHA1 SHA512 SSDEEP

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cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe

Path C:\Users\Admin\AppData\Local\Temp\cac7e8e143e1837ef74300ee554330ff7310700fda2e370c0aa598c3ba4bcde8mgr.exe
Size 59KB
SHA256 5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd
MD5 0e0f0ae845d89c22bb6385f64a6b85fd
SHA1 0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac
SHA512 baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350
SSDEEP 768:W06R0UKzOgnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9L:0R0vxn3Pc0LCH9MtbvabUDzJYWu3BU
MD5 SHA1 SHA512 SSDEEP

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memory/1044-138-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/1044-139-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/1044-147-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/1048-150-0x0000000001000000-0x0000000001107000-memory.dmp

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memory/1048-132-0x0000000001000000-0x0000000001107000-memory.dmp

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memory/3404-151-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/3404-152-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/3404-153-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/3404-154-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/3404-155-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/3404-156-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/3404-157-0x0000000000400000-0x0000000000421000-memory.dmp

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