25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d

Analysis

max time kernel
163s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2022, 05:52

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General

Target

25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe
Size

581KB
MD5

bcfca956f07c53df3fdd1d5257491f60
SHA1

4843c6a2b2e23de5758104d8b76ca419a3334eed
SHA256

25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d
SHA512

7207cdea6ce0353d1c90b845a4afe8da249bfcb723b6d7816e69a939572e99104c0ceb65dcc6814864db3de206cfa24920b52d97dcc1ce6206b701445dc68707
SSDEEP

12288:uoMDtCi7NFlZnNqZ9xGrLpZ0ZHEqtgb0UL:ufplNFgxG5eZngb0M

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4944	nbfile0.exe
3488	nbfile1.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	nbfile1.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x000400000001d9f1-141.dat	nsis_installer_2
behavioral2/files/0x000400000001d9f1-142.dat	nsis_installer_2

Modifies Internet Explorer settings 1 TTPs 37 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "377072749"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1364078194"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31000891"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = c0348b423b09d901	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1364078194"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1254393125"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000b72a2b537a09fd4c8ccd1d68d12e9ca00000000002000000000010660000000100002000000039abbfcc5748b1c3cce97e4f6b09e3d7572ca07e5b507b9e997f6fa5eefcc239000000000e8000000002000020000000c491bc2bdca32023bae3ec1761ca2002e1572795a5e1088ded8f6bf2ae7a63d4200000009dcfeaeea6f06b71a186b381016f707350c8166d73c14e1a0994c23e12008b9240000000b15df33d449341cc11f006a39db0168e68e950aa30cfa635a1ce82b187490051b094d59b1905b30971df666a1b1fdb50198c66a4d4eff0480e96899437feb681	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31000891"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 40e771513b09d901	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1254393125"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31000891"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000b72a2b537a09fd4c8ccd1d68d12e9ca0000000000200000000001066000000010000200000001406edacd4711a63bb005241b2ebc77c5bbb4d760a6831b080c2c0a6890d0939000000000e8000000002000020000000a53dced610c03f80810bf12a3797cec5c0b9cbb4c08df1c3c0fd3aa2f68751b92000000070a975b2fd79cd1c12e92e15880011ee1a4a17e6899cf878712641a7a7163c0d400000001576b79a3180e0bca1ecd3118440be650d9e585defef3662f6192a06d62123349c20945f5bdec407a84ef446d34c1e7c486778b2c397e6eb7fae0bbd69dc2703	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31000891"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{6AF71441-752E-11ED-89AC-72E07057041D} = "0"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings	nbfile1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4944	nbfile0.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4908	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
4944	nbfile0.exe
4908	IEXPLORE.EXE
4908	IEXPLORE.EXE
4220	IEXPLORE.EXE
4220	IEXPLORE.EXE
4220	IEXPLORE.EXE
4220	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 4944	4988	25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe	81
PID 4988 wrote to memory of 4944	4988	25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe	81
PID 4988 wrote to memory of 4944	4988	25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe	81
PID 4944 wrote to memory of 4908	4944	nbfile0.exe	82
PID 4944 wrote to memory of 4908	4944	nbfile0.exe	82
PID 4908 wrote to memory of 4220	4908	IEXPLORE.EXE	83
PID 4908 wrote to memory of 4220	4908	IEXPLORE.EXE	83
PID 4908 wrote to memory of 4220	4908	IEXPLORE.EXE	83
PID 4944 wrote to memory of 340	4944	nbfile0.exe	86
PID 4944 wrote to memory of 340	4944	nbfile0.exe	86
PID 4944 wrote to memory of 340	4944	nbfile0.exe	86
PID 4988 wrote to memory of 3488	4988	25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe	87
PID 4988 wrote to memory of 3488	4988	25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe	87
PID 4988 wrote to memory of 3488	4988	25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe	87
PID 3488 wrote to memory of 3536	3488	nbfile1.exe	88
PID 3488 wrote to memory of 3536	3488	nbfile1.exe	88
PID 3488 wrote to memory of 3536	3488	nbfile1.exe	88
PID 3488 wrote to memory of 3516	3488	nbfile1.exe	89
PID 3488 wrote to memory of 3516	3488	nbfile1.exe	89
PID 3488 wrote to memory of 3516	3488	nbfile1.exe	89

C:\Users\Admin\AppData\Local\Temp\25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe
"C:\Users\Admin\AppData\Local\Temp\25255f6e0728d5718623e0c308b2ad2f4bcf6ce82712804fdccb1758035c314d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Users\Admin\AppData\Local\Temp\nbfile0.exe
  C:\Users\Admin\AppData\Local\Temp\nbfile0.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4944
- - C:\Program Files\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files\Internet Explorer\IEXPLORE.EXE" http://down.97199.com/install2/?sl3
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4908
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4908 CREDAT:17410 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:4220
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\nbfile0.exe
    3⤵
    PID:340
- C:\Users\Admin\AppData\Local\Temp\nbfile1.exe
  C:\Users\Admin\AppData\Local\Temp\nbfile1.exe
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3488
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\newsetup.vbs"
    3⤵
    PID:3536
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\1.vbs"
    3⤵
    PID:3516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\69C6F6EC64E114822DF688DC12CDD86C

Filesize
779B

MD5
cc4a1c70f16afdc865cffc67caede5a1

SHA1
5b3a39e3bf12a516bee4aba19936d11998702265

SHA256
69227d14d500f270b8662234349d38ac2639fa6cc656cc687797d7df0a747333

SHA512
b8e07208b1f8db5a0935120d1f6d76136d03617e3a717395f83b041da2f007f550547e12ee74704199b0bdf0ba1257c0bfb06f5865c17a65388416d1fbeaa580

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\69C6F6EC64E114822DF688DC12CDD86C

Filesize
246B

MD5
551e9565154e3632ea50ea39ff416c27

SHA1
7f88a021eb07cdd2ac702348ab92a9b66a0584d4

SHA256
7a2aaa055ac84d930a8ed73f493a7a8094df3fcbf30a9e777c751693fad54354

SHA512
4efb1822e62ca0d9d83b0f3bbdfec6b84beb49399e9f4ffe29cac7bf0d6c3b36da50cb992f8ffb55ad6e2b7a97807d30bc97d5b7792b655cd9131f23bd82f9af

Download Submit
C:\Users\Admin\AppData\Local\Temp\nbfile0.exe

Filesize
467KB

MD5
74869a0346ab36bbba85022612505121

SHA1
2cd02f46f2f9f46eaf15fce40a3bf4781f80cf8a

SHA256
6de866b5c8abb1db9b2be231b365c1aa029118fbc58823f443f00e3a33dff18a

SHA512
723812083113cff82aa5e2243759c572518865e351cc81b7c2b85a05557862dbbd7a98b964ff6f3aa3802bb5d4dab01a14147211495fc5803d9ddb7b715f4de5

Download Submit
C:\Users\Admin\AppData\Local\Temp\nbfile0.exe

Filesize
467KB

MD5
74869a0346ab36bbba85022612505121

SHA1
2cd02f46f2f9f46eaf15fce40a3bf4781f80cf8a

SHA256
6de866b5c8abb1db9b2be231b365c1aa029118fbc58823f443f00e3a33dff18a

SHA512
723812083113cff82aa5e2243759c572518865e351cc81b7c2b85a05557862dbbd7a98b964ff6f3aa3802bb5d4dab01a14147211495fc5803d9ddb7b715f4de5

Download Submit
C:\Users\Admin\AppData\Local\Temp\nbfile1.exe

Filesize
52KB

MD5
c4ddf11ebdbf9d8397d710d2cb4e2fab

SHA1
8008c97e7d6ff92deb3e1755a614f4afedca92b9

SHA256
67a632049e45c25de35b533659624ca24f8e70447abca015bf5776ce6cb3ded6

SHA512
3c9be7b92208e8c0f57ab8048108714e06b2aa896a479f61637a93a9eacb4818fcb25ce3d4e1a24086558daeae65d4b482b2c1cfba3df202c396e2bc218362e9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nbfile1.exe

Filesize
52KB

MD5
c4ddf11ebdbf9d8397d710d2cb4e2fab

SHA1
8008c97e7d6ff92deb3e1755a614f4afedca92b9

SHA256
67a632049e45c25de35b533659624ca24f8e70447abca015bf5776ce6cb3ded6

SHA512
3c9be7b92208e8c0f57ab8048108714e06b2aa896a479f61637a93a9eacb4818fcb25ce3d4e1a24086558daeae65d4b482b2c1cfba3df202c396e2bc218362e9

Download Submit
C:\newsetup.vbs

Filesize
651B

MD5
4736e7158c27f244482f5a614b9dbdae

SHA1
d3a0e95a81e9e3ec95cfd596b25749a0e24e27b9

SHA256
b8229bc8d6b0013858fb9599cb510afa4566a439164b2c7444c449540a124acc

SHA512
cebf895dd3ec3822c42b78bac49c685b063cb5afcbcfb3850b073cb118d086c5fa75ec50b6e73d90e14f2c6b595752ad87910b8cf27378424d72a9ea309bf824

Download Submit
memory/4944-139-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/4944-137-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download