7b06062372121380aca639a8d17b2a4e2e5f7f856dabb7144cb6305807250715

Analysis

max time kernel
136s
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
02/10/2022, 04:53

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General

Target

7b06062372121380aca639a8d17b2a4e2e5f7f856dabb7144cb6305807250715.dll
Size

208KB
MD5

641047a686acc9d7a47b1fd0af39f2d0
SHA1

8d471a8ed8d1a64c9b97d02b6a5b957a7780277f
SHA256

7b06062372121380aca639a8d17b2a4e2e5f7f856dabb7144cb6305807250715
SHA512

5d4e5b35864506f3c9ed8b7851cb873398fa13195df24850ee4dbaf162086e50bd5460bcd6e3bff2ce9e16e7f4c1df60e42db66ced7a7c529f53f5e8f07bb58d
SSDEEP

3072:uHfKj5SssNrNqZIitP2Siy8uZV0wp7IkjmjB+qYBakN+gK9Rv3Tp2Bg:u/Kj5SrN/2Vx7IkjkB+qYEkogK9NoBg

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1656	rundll32mgr.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1656-140-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1656-141-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1656-142-0x0000000000400000-0x000000000041A000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3520	1568	WerFault.exe	81

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30987827"	iexplore.exe
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 = "4218131079"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30987827"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "4128755419"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30987827"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4128755419"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{20738E2B-4227-11ED-AECB-5203DB9D3E0F} = "0"	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\VersionManager	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\Main	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
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\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371462118"	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 (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	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\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\Recovery\AdminActive	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\FileNames\	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1656	rundll32mgr.exe
1656	rundll32mgr.exe
1656	rundll32mgr.exe
1656	rundll32mgr.exe
1656	rundll32mgr.exe
1656	rundll32mgr.exe
1656	rundll32mgr.exe
1656	rundll32mgr.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5008	iexplore.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	rundll32mgr.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5008	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
5008	iexplore.exe
5008	iexplore.exe
1520	IEXPLORE.EXE
1520	IEXPLORE.EXE
1520	IEXPLORE.EXE
1520	IEXPLORE.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1656	rundll32mgr.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 1568	3036	rundll32.exe	81
PID 3036 wrote to memory of 1568	3036	rundll32.exe	81
PID 3036 wrote to memory of 1568	3036	rundll32.exe	81
PID 1568 wrote to memory of 1656	1568	rundll32.exe	82
PID 1568 wrote to memory of 1656	1568	rundll32.exe	82
PID 1568 wrote to memory of 1656	1568	rundll32.exe	82
PID 1656 wrote to memory of 5008	1656	rundll32mgr.exe	84
PID 1656 wrote to memory of 5008	1656	rundll32mgr.exe	84
PID 5008 wrote to memory of 1520	5008	iexplore.exe	87
PID 5008 wrote to memory of 1520	5008	iexplore.exe	87
PID 5008 wrote to memory of 1520	5008	iexplore.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7b06062372121380aca639a8d17b2a4e2e5f7f856dabb7144cb6305807250715.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7b06062372121380aca639a8d17b2a4e2e5f7f856dabb7144cb6305807250715.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1568
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:1656
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:5008
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5008 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1520
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1568 -s 636
    3⤵
    - Program crash
    PID:3520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1568 -ip 1568
1⤵
PID:4908

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:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
f525b778e6901e8c416e2920e4e3dc0b

SHA1
917ce8ae6d64bdd4dd438488176253022c57a083

SHA256
c9eee793aa4aa79f35d393f9f1d863483aaf4004dea6ac19bda868e92a71f8bd

SHA512
f6f47a4935c09769b8df316e1b459c7b153ed26ac409d4bf2ce62a1635dba4eaf7ce77de5ce83100d6f3ce7aadffed7591fb7cee7ac10a0c081a2d3c613f1ad8

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

Filesize
404B

MD5
87617352e8ad2e2ee421bf4a032e0218

SHA1
82a58a1c4ee019a16c98c3929826d59d97a90abb

SHA256
3771f58a9625c641bff2775ed2d4b9726e729fbe593a7bcf66e9136085dd6221

SHA512
64b8d441c77bb2198516f45b9548e92b3982b71fe17633ff34af78575c83baa100c17a9b62e47c0a5003c36cceff5ba07494b8fd87aa6a2605f939f8b643fa1e

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

Filesize
88KB

MD5
a61ea5f2325332c52bff5bce3d161336

SHA1
3a883b8241f5f2efaa76367240db800d78a0209c

SHA256
e6f8a54ed663061527ab46b8e8efc2a0f3c99ae77829c0be0e50eb5b1b48415b

SHA512
fae031e0e7dcd719240bfe94a3f78d1aac73060324d5b65e0cbe564ce6d6781aaa5e930f0729293e3b502b7d07f53f3a72fb2048d44d93d36851aab8330479e5

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

Filesize
88KB

MD5
a61ea5f2325332c52bff5bce3d161336

SHA1
3a883b8241f5f2efaa76367240db800d78a0209c

SHA256
e6f8a54ed663061527ab46b8e8efc2a0f3c99ae77829c0be0e50eb5b1b48415b

SHA512
fae031e0e7dcd719240bfe94a3f78d1aac73060324d5b65e0cbe564ce6d6781aaa5e930f0729293e3b502b7d07f53f3a72fb2048d44d93d36851aab8330479e5

Download Submit
memory/1568-133-0x0000000010000000-0x0000000010035000-memory.dmp

Filesize
212KB

Download
memory/1568-143-0x0000000010000000-0x0000000010035000-memory.dmp

Filesize
212KB

Download
memory/1656-137-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1656-140-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1656-141-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1656-142-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download