228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec

Analysis

max time kernel
138s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2022, 18:57

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General

Target

228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe
Size

581KB
MD5

0e6251007c7af7297a7f69165f4470bd
SHA1

9558802173d2897f805541fcca5675a4259f0b16
SHA256

228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec
SHA512

9db711c7780f62b50a1f9a5a65be5d7a75937ad8f5128c1f10d4e6a472c04f1e4a729b03a79c99c55fc46efa661ee8d7d9817f2bb0a36526f35c6c79674f5c21
SSDEEP

12288:uoMDtCi7NFlZnNqZ9xGrLpZ0ZHEqtgb0Ut:ufplNFgxG5eZngb0W

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4972	nbfile0.exe
1148	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-1-5-21-2629973501-4017243118-3254762364-1000\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/0x000500000001daff-141.dat	nsis_installer_2
behavioral2/files/0x000500000001daff-142.dat	nsis_installer_2

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2728ad8693e804caf0ad2c227b142160000000002000000000010660000000100002000000037eaa5e6eff6d6e76ecd418772b602025c2ec8ac84ea3c8e5953b9e7ae30068c000000000e8000000002000020000000a93e487a110edbe26707e811ca863069c33a244c7b15bd08ba5262844e2f732d2000000006310715c70722e096d2d29190a8e75c695b66ef129a022a04b41fa149c73e98400000005496c6e98c6dee26a25d8b976a77ba5b33a7cd7578ec61986fbad295c1e483ed5302612e40570c837c62abab714ff1270b6633f19dca81c9b56c7e22b0d1c0b7	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a026e2187ff3d801	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\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 (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\TabbedBrowsing\NewTabPage	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 (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\TabbedBrowsing\NTPFirstRun = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "851852932"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30995327"	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\{431C8BA7-5F72-11ED-B696-C264E7FE3618} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	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\VersionManager\LastCheckForUpdateLowDateTime = "851852932"	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\TabbedBrowsing\NewTabPage\LastProcessed = f04abe187ff3d801	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\VersionManager\LastUpdateHighDateTime = "30995327"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2728ad8693e804caf0ad2c227b14216000000000200000000001066000000010000200000007757cac5113424417aeb0dc9c682529b3bd56ea5cbf1b0df90bbda8051b6cc8d000000000e8000000002000020000000a1af3382595a3d3edb7ca7ddf6fe1c33ab3751e2f702006f7f76267e1f1c46a320000000d06245d6a3e50ec0475040a27fdcb8402db638e8c4b93f133436f1dc007ed91f40000000f711e3005eccf68d5998e9412b542abcf29ca8459f383327a0dcabdd9162bb1059ee2aee1ffd52d507e8022a746957543280631cec182680cc7005c0d55c33e8	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 = "374682962"	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\Main\CompatibilityFlags = "0"	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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings	nbfile1.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4900	IEXPLORE.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4972	nbfile0.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4900	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
4972	nbfile0.exe
4900	IEXPLORE.EXE
4900	IEXPLORE.EXE
876	IEXPLORE.EXE
876	IEXPLORE.EXE
876	IEXPLORE.EXE
876	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 4972	4952	228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe	81
PID 4952 wrote to memory of 4972	4952	228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe	81
PID 4952 wrote to memory of 4972	4952	228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe	81
PID 4972 wrote to memory of 4900	4972	nbfile0.exe	82
PID 4972 wrote to memory of 4900	4972	nbfile0.exe	82
PID 4900 wrote to memory of 876	4900	IEXPLORE.EXE	83
PID 4900 wrote to memory of 876	4900	IEXPLORE.EXE	83
PID 4900 wrote to memory of 876	4900	IEXPLORE.EXE	83
PID 4972 wrote to memory of 4676	4972	nbfile0.exe	86
PID 4972 wrote to memory of 4676	4972	nbfile0.exe	86
PID 4972 wrote to memory of 4676	4972	nbfile0.exe	86
PID 4952 wrote to memory of 1148	4952	228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe	87
PID 4952 wrote to memory of 1148	4952	228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe	87
PID 4952 wrote to memory of 1148	4952	228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe	87
PID 1148 wrote to memory of 4308	1148	nbfile1.exe	88
PID 1148 wrote to memory of 4308	1148	nbfile1.exe	88
PID 1148 wrote to memory of 4308	1148	nbfile1.exe	88
PID 1148 wrote to memory of 4136	1148	nbfile1.exe	89
PID 1148 wrote to memory of 4136	1148	nbfile1.exe	89
PID 1148 wrote to memory of 4136	1148	nbfile1.exe	89

C:\Users\Admin\AppData\Local\Temp\228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe
"C:\Users\Admin\AppData\Local\Temp\228b77afe99c01e34976838b9550a7e14e1680516fd96a0990fbc5edf5461cec.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4952
- 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:4972
- - 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 behavior: GetForegroundWindowSpam
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4900
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4900 CREDAT:17410 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:876
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\nbfile0.exe
    3⤵
    PID:4676
- 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:1148
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\newsetup.vbs"
    3⤵
    PID:4308
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\1.vbs"
    3⤵
    PID:4136

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\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/4972-137-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/4972-139-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download