b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683

General

Target

b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe
Size

6.3MB
MD5

55fc42c9e176676f91d8566f85637377
SHA1

d467146fcfc3c5b53a13fc20906e686d8005c483
SHA256

b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683
SHA512

ddea2a8ffa59e0f759378416369bbc907d2009f95ed21e49290e0a77590744abf509cba1d9c3ed6feaedf54a5130759b7967a0fc8cfc3607521656fcd7c08bfb
SSDEEP

98304:Q1ROYXnwB6N/g2mCw6cB27OgUWZHw7saFCKuJJBAUZLRx2:0XwBjJff2sWGFCKsJV1x2

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1744	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe

UPX packed file 27 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1744-1-0x0000000000260000-0x000000000026B000-memory.dmp	upx
behavioral1/memory/1744-45-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-46-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-41-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-39-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-37-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-35-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-33-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-31-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-28-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-26-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-23-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-21-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-19-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-17-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-14-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-10-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-8-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-6-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-4-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-3-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-2-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-43-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-52-0x0000000000260000-0x000000000026B000-memory.dmp	upx
behavioral1/memory/1744-51-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-50-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1744-49-0x0000000010000000-0x000000001003E000-memory.dmp	upx

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 24 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{96127061-7106-11EF-B856-666B6675A85F} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1156	iexplore.exe

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
1744	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe
1744	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe
1744	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe
1156	iexplore.exe
1156	iexplore.exe
1720	IEXPLORE.EXE
1720	IEXPLORE.EXE
1720	IEXPLORE.EXE
1720	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 1156	1744	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe	30
PID 1744 wrote to memory of 1156	1744	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe	30
PID 1744 wrote to memory of 1156	1744	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe	30
PID 1744 wrote to memory of 1156	1744	b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe	30
PID 1156 wrote to memory of 1720	1156	iexplore.exe	31
PID 1156 wrote to memory of 1720	1156	iexplore.exe	31
PID 1156 wrote to memory of 1720	1156	iexplore.exe	31
PID 1156 wrote to memory of 1720	1156	iexplore.exe	31

C:\Users\Admin\AppData\Local\Temp\b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe
"C:\Users\Admin\AppData\Local\Temp\b862c5fa7ed8ecf8aa07b258c9465776cb68815a6b9ab0c04d1a3a2ddd4dd683.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" https://changkongbao.lanzouq.com/ikW9T1cfeg5e
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1156
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1156 CREDAT:275457 /prefetch:2
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:1720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\·½°¸.ini

Filesize
10KB

MD5
842d9e10867153ad73a1a80d79afef13

SHA1
33a49d893273182e8aba6e9531c3077d4ab86516

SHA256
2823197bddf0203ea011003a4e70f2687da234a3388b5090a76da2c2562d33e4

SHA512
e6e10f63c7d3e65358bd6e66a7328f7d06d096b2ed936cd4504cfb8c6b5f4081dd55884bb915191156965b0eb9b3fda6a97b5b1a1eee45d59a41a4e375d1e518

Download Submit
C:\Users\Admin\AppData\Local\Temp\·½°¸.ini

Filesize
8KB

MD5
16ef8177433976c14d23f839a8c1152a

SHA1
2b653ca841498be9292cbbc8b5119504e225f56d

SHA256
2a30dc50f2e6e73b059d7419b34924114bffcfa8d99f7703bfbdd4f9e5da8855

SHA512
9cccf0eb97b898988e5da63584e195528dd3a0f34d0608844a33c6ac5928d83c8159151a7a15d5382a10114b819cb72d8c5840d254d9ac1023ad6ac22ac4833e

Download Submit
C:\Users\Admin\AppData\Local\Temp\¿ì½Ý·¢ÑÔ·½°¸.txt

Filesize
189B

MD5
322f59ce015ff2f1f00ecbe4fdfce380

SHA1
eb4756a5bb023f6d1feacdbeac6e94013e15d5b0

SHA256
c96ef901d8f23cb7626ef980c4cf5bece7aafeef9b2b8b28829d3a11a51562c1

SHA512
2610ce1c0a55da67faa9ddaca26529a87bf5ebc6706621682d54024fa887ca9cd54cdc5b854f8b79ea99b02a5277d6931f633fa876107d9ec1bf503bee23a02c

Download Submit
C:\Users\Admin\AppData\Local\Temp\ÉèÖÃ.ini

Filesize
260B

MD5
924bf7a4ce305dad87743ba3c5773aa9

SHA1
12d0fddb472394b23e5176ab4ede38974e723b81

SHA256
01faf5e88442653bf38adc145d517f44d3495398e0aa666c7486b7030c126cbd

SHA512
2380c957717d3bc97ae2de96aba9cd3b50a1774eb96dc47840add1b12ee13485ee6cc6c4d30953b8f42d32ae3b02657966229fcbe58a60843df0cbd6170eb44e

Download Submit
\Users\Admin\AppData\Local\Temp\ExuiKrnln_Win32_20230421.lib

Filesize
1.5MB

MD5
ef48d7cc52338513cc0ce843c5e3916b

SHA1
20965d86b7b358edf8b5d819302fa7e0e6159c18

SHA256
835bfef980ad0cedf10d8ade0cf5671d9f56062f2b22d0a0547b07772ceb25a8

SHA512
fd4602bd487eaad5febb5b3e9d8fe75f4190d1e44e538e7ae2d2129087f35b72b254c85d7335a81854aa2bdb4f0f2fa22e02a892ee23ac57b78cdd03a79259b9

Download Submit
memory/1744-8-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-2-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-35-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-33-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-31-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-28-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-26-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-23-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-21-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-19-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-17-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-14-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-10-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-1-0x0000000000260000-0x000000000026B000-memory.dmp

Filesize
44KB

Download
memory/1744-6-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-4-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-3-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-37-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-43-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-53-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/1744-52-0x0000000000260000-0x000000000026B000-memory.dmp

Filesize
44KB

Download
memory/1744-51-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-50-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-49-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-58-0x0000000000B50000-0x0000000000B51000-memory.dmp

Filesize
4KB

Download
memory/1744-57-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/1744-56-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/1744-39-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-69-0x0000000000400000-0x0000000000AA7000-memory.dmp

Filesize
6.7MB

Download
memory/1744-41-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-46-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-45-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1744-0-0x0000000000400000-0x0000000000AA7000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads