ramnit | 25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f

General

Target

25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f.exe
Size

640KB
MD5

9e457524c53a324524ed2cb6ac47b364
SHA1

6f6c1a73cacd79495579e14fa68f3c970ec9f8f5
SHA256

25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f
SHA512

e7bd936e7532272120d469c1f5a0a0b8139d87d3b271a2833a284885b89f50bade4c868d2934d56434d48f03354f82995ce73195a8f2aa5b3d01b42131d38dd0
SSDEEP

12288:72f+zZvZ5kjAcUFc2yV7zIFDIyWOy6ba3yd4QCZUv5YYYkx9:7ROQa3e4JZ8YkL

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
764	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe
2036	DesktopLayer.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/764-7-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/2036-14-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/2036-16-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/2036-17-0x0000000000400000-0x0000000000413000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxA0C4.tmp	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.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	DesktopLayer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe

Modifies Internet Explorer settings 1 TTPs 26 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	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
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\GPU	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
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31158421"	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\Recovery\AdminActive\{6906B05C-DC88-11EF-BDBF-CE95CE932DF6} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1032796746"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	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
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1036078159"	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
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\LastCheckForUpdateHighDateTime = "31158421"	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
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
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	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
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "444731365"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2036	DesktopLayer.exe
2036	DesktopLayer.exe
2036	DesktopLayer.exe
2036	DesktopLayer.exe
2036	DesktopLayer.exe
2036	DesktopLayer.exe
2036	DesktopLayer.exe
2036	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1456	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1456	iexplore.exe
1456	iexplore.exe
1356	IEXPLORE.EXE
1356	IEXPLORE.EXE
1356	IEXPLORE.EXE
1356	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3512 wrote to memory of 764	3512	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f.exe	84
PID 3512 wrote to memory of 764	3512	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f.exe	84
PID 3512 wrote to memory of 764	3512	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f.exe	84
PID 764 wrote to memory of 2036	764	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe	85
PID 764 wrote to memory of 2036	764	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe	85
PID 764 wrote to memory of 2036	764	25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe	85
PID 2036 wrote to memory of 1456	2036	DesktopLayer.exe	86
PID 2036 wrote to memory of 1456	2036	DesktopLayer.exe	86
PID 1456 wrote to memory of 1356	1456	iexplore.exe	87
PID 1456 wrote to memory of 1356	1456	iexplore.exe	87
PID 1456 wrote to memory of 1356	1456	iexplore.exe	87

C:\Users\Admin\AppData\Local\Temp\25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f.exe
"C:\Users\Admin\AppData\Local\Temp\25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3512
- C:\Users\Admin\AppData\Local\Temp\25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe
  C:\Users\Admin\AppData\Local\Temp\25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:764
- - 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:2036
  - - 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:1456
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1456 CREDAT:17410 /prefetch:2
        5⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1356

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
ac482b4020f11619518711b4434d63de

SHA1
6f33fa6abc69a6b3988f41d5d0334c3fc1c16d29

SHA256
6c0b81d8d28c83989a450e2da1abd765aad3b71706761a0d6124c7550f8ea7f8

SHA512
4832a93c5807a0235477ddd5706927c0c5850a11aa2ead5dd37ad57322981075c7625b62cefd7d671b412b29cd60a56962ea86de800df1c9b3434fd915d43953

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\25c536c7ccf82e0c7bfcf5b53deec857d4a4de7892503dcaa275f5f8c3ab7c7fSrv.exe

Filesize
52KB

MD5
ce99b549382dbfc4f41efe99b5dbcd54

SHA1
66905167920ece3a0bf65441d30da72ad25b7475

SHA256
e26d8f6a9c98b949d1f58c97c2dbcf7d90d7a3c3d2f06eb9b6033465d493322d

SHA512
54447bdddf475594a4e8f5ccda131190e3e858a02e0147aee7c7b04ae54812b18aefdbdf5e59fc3005686b06fe938b904b2099672063738898f4995fd4bab1bc

Download Submit
memory/764-7-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/764-6-0x0000000002020000-0x0000000002033000-memory.dmp

Filesize
76KB

Download
memory/2036-13-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2036-16-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2036-15-0x00000000007A0000-0x00000000007A1000-memory.dmp

Filesize
4KB

Download
memory/2036-17-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2036-14-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3512-0-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/3512-5-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download

Analysis

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