ramnit | 6ace4ddf63aa8d54b60f01e6aaa4638c27b49dfc64a707e35c004eee09de1c7f

Analysis

max time kernel
47s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
24-05-2022 17:41

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General

Target

范伟打天下招财宝辅助/data/dm.dll
Size

860KB
MD5

0124de17de85c71d43e062b5c36501a4
SHA1

fae128fd4743ce22b008acaf4ca0da0bc34182bd
SHA256

94811d833c7af1de6247ef7de86518ddb74b944f597d62a76b2d73dba7e37d10
SHA512

6e7f6605c202bb865f7c095d1e8f3db84cef78fcc9bf69ad994c83545a92c96f870aea432b19b0a979d08274696fc90168036d83e532fc42d7ebf08e6c3dfdc3

Score

10^/10

ramnit banker spyware stealer trojan upx worm

Malware Config

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit
Executes dropped EXE 2 IoCs

Processes:

regsvr32Srv.exeDesktopLayer.exe

pid process

1568 regsvr32Srv.exe
2724 DesktopLayer.exe

pid	process
1568	regsvr32Srv.exe
2724	DesktopLayer.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
C:\Windows\SysWOW64\regsvr32Srv.exe	upx
C:\Windows\SysWOW64\regsvr32Srv.exe	upx

Drops file in System32 directory 1 IoCs

Processes:

regsvr32.exe

description ioc process

File created C:\Windows\SysWOW64\regsvr32Srv.exe regsvr32.exe

description	ioc	process
File created	C:\Windows\SysWOW64\regsvr32Srv.exe	regsvr32.exe

Drops file in Program Files directory 3 IoCs

Processes:

regsvr32Srv.exe

description	ioc	process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxBA1D.tmp	regsvr32Srv.exe

Modifies Internet Explorer settings 1 TTPs 11 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{C8D5BD11-DB9F-11EC-AC67-5EDCC15D6134} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	process
2724	DesktopLayer.exe
2724	DesktopLayer.exe
2724	DesktopLayer.exe
2724	DesktopLayer.exe
2724	DesktopLayer.exe
2724	DesktopLayer.exe
2724	DesktopLayer.exe
2724	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

2644 iexplore.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

2644 iexplore.exe
2644 iexplore.exe
3004 IEXPLORE.EXE
3004 IEXPLORE.EXE

pid	process
2644	iexplore.exe

pid	process
2644	iexplore.exe
2644	iexplore.exe
3004	IEXPLORE.EXE
3004	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

regsvr32.exeregsvr32.exeregsvr32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 2704 wrote to memory of 1292	2704	regsvr32.exe	regsvr32.exe
PID 2704 wrote to memory of 1292	2704	regsvr32.exe	regsvr32.exe
PID 2704 wrote to memory of 1292	2704	regsvr32.exe	regsvr32.exe
PID 1292 wrote to memory of 1568	1292	regsvr32.exe	regsvr32Srv.exe
PID 1292 wrote to memory of 1568	1292	regsvr32.exe	regsvr32Srv.exe
PID 1292 wrote to memory of 1568	1292	regsvr32.exe	regsvr32Srv.exe
PID 1568 wrote to memory of 2724	1568	regsvr32Srv.exe	DesktopLayer.exe
PID 1568 wrote to memory of 2724	1568	regsvr32Srv.exe	DesktopLayer.exe
PID 1568 wrote to memory of 2724	1568	regsvr32Srv.exe	DesktopLayer.exe
PID 2724 wrote to memory of 2644	2724	DesktopLayer.exe	iexplore.exe
PID 2724 wrote to memory of 2644	2724	DesktopLayer.exe	iexplore.exe
PID 2644 wrote to memory of 3004	2644	iexplore.exe	IEXPLORE.EXE
PID 2644 wrote to memory of 3004	2644	iexplore.exe	IEXPLORE.EXE
PID 2644 wrote to memory of 3004	2644	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\范伟打天下招财宝辅助\data\dm.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\范伟打天下招财宝辅助\data\dm.dll
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1292
- - C:\Windows\SysWOW64\regsvr32Srv.exe
    C:\Windows\SysWOW64\regsvr32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1568

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2644 CREDAT:17410 /prefetch:2
1⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3004

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe"
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2644

C:\Program Files (x86)\Microsoft\DesktopLayer.exe
"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2724

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:\Program Files (x86)\Microsoft\DesktopLayer.exe

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Download Submit
C:\Windows\SysWOW64\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Windows\SysWOW64\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1292-130-0x0000000000000000-mapping.dmp

Download
memory/1568-136-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1568-131-0x0000000000000000-mapping.dmp

Download
memory/2724-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2724-134-0x0000000000000000-mapping.dmp

Download