a94cf160138f443e5a14fd8dc7c413a1a712b5b3c48681aa9495c53cd5db52d3

Analysis

max time kernel
151s
max time network
180s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 03:56

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General

Target

x32/eSm1_ILANG.dll
Size

3.3MB
MD5

4e54c60f803167319c5660091ac83d21
SHA1

034be8467b8ef50d5600bf63ee6d249126a9cb8e
SHA256

d069781aff820148df82a9f6087075f7e4d615abdeff3f88e5ab1e11664c6392
SHA512

15381c3a275388c09ac2478e20f1ed9aa11322dc70f26c39f4065133006f8d2cc5daa0512c462491bcbdad92db9142dbb01662f279d64c4be0986b6868f29ae6

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

rundll32mgr.exe

pid process

1768 rundll32mgr.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
\Windows\SysWOW64\rundll32mgr.exe	upx
\Windows\SysWOW64\rundll32mgr.exe	upx
C:\Windows\SysWOW64\rundll32mgr.exe	upx
behavioral21/memory/1768-62-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

rundll32.exe

pid process

1868 rundll32.exe
1868 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe

pid	process
1868	rundll32.exe
1868	rundll32.exe

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

Modifies Internet Explorer settings 1 TTPs 53 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeiexplore.exeIEXPLORE.EXEIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3d0000003d000000c3040000a2020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{331A30A1-D8D9-11EC-82BB-6280490416C4} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{33141621-D8D9-11EC-82BB-6280490416C4} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "359883792"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

rundll32mgr.exe

pid	process
1768	rundll32mgr.exe
1768	rundll32mgr.exe
1768	rundll32mgr.exe
1768	rundll32mgr.exe
1768	rundll32mgr.exe
1768	rundll32mgr.exe
1768	rundll32mgr.exe
1768	rundll32mgr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32mgr.exe

description pid process

Token: SeDebugPrivilege 1768 rundll32mgr.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

iexplore.exeiexplore.exe

pid process

1660 iexplore.exe
1820 iexplore.exe

description	pid	process
Token: SeDebugPrivilege	1768	rundll32mgr.exe

pid	process
1660	iexplore.exe
1820	iexplore.exe

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

iexplore.exeiexplore.exeIEXPLORE.EXEIEXPLORE.EXE

pid	process
1820	iexplore.exe
1820	iexplore.exe
1660	iexplore.exe
1660	iexplore.exe
1356	IEXPLORE.EXE
1356	IEXPLORE.EXE
832	IEXPLORE.EXE
832	IEXPLORE.EXE
832	IEXPLORE.EXE
832	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

rundll32.exerundll32.exerundll32mgr.exeiexplore.exeiexplore.exe

description	pid	process	target process
PID 1700 wrote to memory of 1868	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1868	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1868	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1868	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1868	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1868	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1868	1700	rundll32.exe	rundll32.exe
PID 1868 wrote to memory of 1768	1868	rundll32.exe	rundll32mgr.exe
PID 1868 wrote to memory of 1768	1868	rundll32.exe	rundll32mgr.exe
PID 1868 wrote to memory of 1768	1868	rundll32.exe	rundll32mgr.exe
PID 1868 wrote to memory of 1768	1868	rundll32.exe	rundll32mgr.exe
PID 1768 wrote to memory of 1660	1768	rundll32mgr.exe	iexplore.exe
PID 1768 wrote to memory of 1660	1768	rundll32mgr.exe	iexplore.exe
PID 1768 wrote to memory of 1660	1768	rundll32mgr.exe	iexplore.exe
PID 1768 wrote to memory of 1660	1768	rundll32mgr.exe	iexplore.exe
PID 1768 wrote to memory of 1820	1768	rundll32mgr.exe	iexplore.exe
PID 1768 wrote to memory of 1820	1768	rundll32mgr.exe	iexplore.exe
PID 1768 wrote to memory of 1820	1768	rundll32mgr.exe	iexplore.exe
PID 1768 wrote to memory of 1820	1768	rundll32mgr.exe	iexplore.exe
PID 1820 wrote to memory of 1356	1820	iexplore.exe	IEXPLORE.EXE
PID 1820 wrote to memory of 1356	1820	iexplore.exe	IEXPLORE.EXE
PID 1820 wrote to memory of 1356	1820	iexplore.exe	IEXPLORE.EXE
PID 1820 wrote to memory of 1356	1820	iexplore.exe	IEXPLORE.EXE
PID 1660 wrote to memory of 832	1660	iexplore.exe	IEXPLORE.EXE
PID 1660 wrote to memory of 832	1660	iexplore.exe	IEXPLORE.EXE
PID 1660 wrote to memory of 832	1660	iexplore.exe	IEXPLORE.EXE
PID 1660 wrote to memory of 832	1660	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\x32\eSm1_ILANG.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\x32\eSm1_ILANG.dll,#1
2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1868

C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\rundll32mgr.exe
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768

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:1660

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1660 CREDAT:275457 /prefetch:2
5⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:832

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:1820

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1820 CREDAT:275457 /prefetch:2
5⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1356

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\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{33141621-D8D9-11EC-82BB-6280490416C4}.dat
Filesize
3KB

MD5
48958ec01aa5cc0262f738f40d0824bc

SHA1
287fd8fff2301b8d698c408e512cfc125efd6f56

SHA256
4fec60402857a684879edbb712a2cca4c461268c7506959d33d24f2b7af89eb6

SHA512
e3d9f9c6f2d1de9a42b354d13de426ef6612ad1b5ed0fe37c8056621bf2ccc42aa32055907d36b8d9e70e982b77cccc712653091bfbf69a46b7ad89138af4171

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{331A30A1-D8D9-11EC-82BB-6280490416C4}.dat
Filesize
5KB

MD5
559594badd946ca1cc323af39c65e3c9

SHA1
6c5c4d12dbe2a87143bc15f278ec6f1921b6d903

SHA256
8e0526eb541e94bfb3044fd3ce82a0b3ce6a7b32a40f52ceac890c97b28ca030

SHA512
ba997439c7f8e2f75dcfa38137c7b8c90caf349932ef697d6823356f8c3a1212bb84591f16ccb392a036c464739dafccad334870383407a19802acb2d20da981

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\0F2VQ048.txt
Filesize
595B

MD5
d73f687ba3c58a50f575de85026dde84

SHA1
3034178040cc4a9ed6582d2f6630de2bbd2d82ad

SHA256
affc5cb50592b6abe769b010b92f534795541e1b384e23019bde1eaebaa220e3

SHA512
1a0f2160bd85c4040903175fd320c37b5c16b26b59d2ccbdb4009ecfa1006680419d6da6e09c0e545a4216fc001c5c2098ed91a903ab04768371abf725e7ff05

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe
Filesize
105KB

MD5
dfb5daabb95dcfad1a5faf9ab1437076

SHA1
4a199569a9b52911bee7fb19ab80570cc5ff9ed1

SHA256
54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

SHA512
5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

Download Submit
\Windows\SysWOW64\rundll32mgr.exe
Filesize
105KB

MD5
dfb5daabb95dcfad1a5faf9ab1437076

SHA1
4a199569a9b52911bee7fb19ab80570cc5ff9ed1

SHA256
54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

SHA512
5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

Download Submit
\Windows\SysWOW64\rundll32mgr.exe
Filesize
105KB

MD5
dfb5daabb95dcfad1a5faf9ab1437076

SHA1
4a199569a9b52911bee7fb19ab80570cc5ff9ed1

SHA256
54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

SHA512
5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

Download Submit
memory/1768-58-0x0000000000000000-mapping.dmp

Download
memory/1768-62-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1868-54-0x0000000000000000-mapping.dmp

Download
memory/1868-55-0x0000000075841000-0x0000000075843000-memory.dmp

Filesize
8KB

Download