ramnit | 12b502d27afcc798ad6d2cee8ab66d92b8a98240599bb261b2ecdd67c0e34fb1

General

Target

250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe
Size

1.3MB
MD5

db1ad2ac3c34a120079692c13052a4f0
SHA1

e812498c5974afec28eac79dd8ef0ee676d7cb5d
SHA256

250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7
SHA512

b4dd35a386d447275c4d7c296d4773dedbc66b648e4baa58768e15b7e6f56e56a104f7e85756c941c4a2cf335dbc0ee4bb5bb843b77e49805ff22f81eae44f60
SSDEEP

24576:Me9svvw/1fKPSjAMHHTChtaV4n57CqckW36vy0rPWI3gQ:Me9AfPS5n+htaGFcky0LW3

Score

10^/10

ramnit banker discovery 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
Ramnit family
ramnit

Executes dropped EXE 2 IoCs

pid	Process
1396	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe
4668	DesktopLayer.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b44-3.dat	upx
behavioral2/memory/1396-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1396-8-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4668-13-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4668-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxA306.tmp	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DesktopLayer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 26 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2539363767"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31158285"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2542961139"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{C2A82874-DC00-11EF-BDBF-EE6C25FCE24B} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31158285"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "444673104"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4668	DesktopLayer.exe
4668	DesktopLayer.exe
4668	DesktopLayer.exe
4668	DesktopLayer.exe
4668	DesktopLayer.exe
4668	DesktopLayer.exe
4668	DesktopLayer.exe
4668	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
452	iexplore.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
4228	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe
4228	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe
452	iexplore.exe
452	iexplore.exe
2824	IEXPLORE.EXE
2824	IEXPLORE.EXE
2824	IEXPLORE.EXE
2824	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 1396	4228	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe	83
PID 4228 wrote to memory of 1396	4228	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe	83
PID 4228 wrote to memory of 1396	4228	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe	83
PID 1396 wrote to memory of 4668	1396	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe	84
PID 1396 wrote to memory of 4668	1396	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe	84
PID 1396 wrote to memory of 4668	1396	250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe	84
PID 4668 wrote to memory of 452	4668	DesktopLayer.exe	85
PID 4668 wrote to memory of 452	4668	DesktopLayer.exe	85
PID 452 wrote to memory of 2824	452	iexplore.exe	86
PID 452 wrote to memory of 2824	452	iexplore.exe	86
PID 452 wrote to memory of 2824	452	iexplore.exe	86

C:\Users\Admin\AppData\Local\Temp\250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe
"C:\Users\Admin\AppData\Local\Temp\250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Users\Admin\AppData\Local\Temp\250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe
  C:\Users\Admin\AppData\Local\Temp\250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1396
- - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4668
  - - 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:452
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:452 CREDAT:17410 /prefetch:2
        5⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

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\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
206fe14723a861b688f6473333dc507c

SHA1
9e2e50dfd67986677e808b216db08c02961ffd7b

SHA256
c8b5bc9cb349c22051a2fedd1b4f755a1d6cce5cfb19be11a93c8e1d7daa5f18

SHA512
a69a00c9a0b0bb6db4bd7e216a57c1f90c01f9fd0f029dcab1328112ec23ceb34e47be669a433fce8e3e575bfb153736269563bed172c6fc4875b8632890317a

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

Filesize
404B

MD5
5f2c47e4a75a0dd558074e36f46091a0

SHA1
3cc6aca8bb16bb98cf66c880102ec84cba7bdfc9

SHA256
691351bee776e0ca3f8e622a8d3ae68f0259822d8a98e894aad080eea92d1de5

SHA512
e2acb5266263d6c8e0d2ca930325d4d9349a1e1b49062f794175eee59797f90a3ae9ce630c41d617775487f84d7f30561512cba5f898488094ebe84147cf7a6d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6IJLDY7V\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\250f05b7b22f886df69550d87c9f0139c0ddfb7dc85b6c6c7e12d1ae3b71d1e7Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1396-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1396-6-0x00000000005A0000-0x00000000005AF000-memory.dmp

Filesize
60KB

Download
memory/1396-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4228-0-0x0000000000400000-0x0000000000555000-memory.dmp

Filesize
1.3MB

Download
memory/4228-17-0x0000000000400000-0x0000000000555000-memory.dmp

Filesize
1.3MB

Download
memory/4668-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4668-14-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download
memory/4668-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

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