ramnit | 81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f

Analysis

max time kernel
94s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2025 00:45

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General

Target

81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f.exe
Size

129KB
MD5

4c483b142b4e92f0b8cce83145e71f10
SHA1

03d4ef761d9ab8a7ef4a61f3fac76ba42b905904
SHA256

81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f
SHA512

ff5d10d60b3348225936b83983f06d135b834dcff88711dbeb1a313e96eb71877e995aa93600b61e6fdae48f2fc8339c52464209b4c0eced0b4677f6ca29d5c0
SSDEEP

3072:HJBGKgiWncy+o1z1Asbyf5yTh6s3JbrFlIvmK0WL+V0tDCa:pBGxiWnoo1z+saATh6EJXLIvZSV09Ca

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
4256	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe
4852	DesktopLayer.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4256-8-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/4256-7-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/4852-15-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/4852-19-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/4852-18-0x0000000000400000-0x0000000000413000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px9848.tmp	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.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	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.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 30 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
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{18796C06-C96C-11EF-BDBF-CEB9D96D8528} = "0"	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 = "3978985154"	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\Recovery\PendingRecovery	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\LastUpdateLowDateTime = "3976016568"	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 (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "442630132"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	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 (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\LastCheckForUpdateLowDateTime = "3976016568"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	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\VersionManager\LastCheckForUpdateHighDateTime = "31153528"	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\VersionManager\LastUpdateHighDateTime = "31153528"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	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 = "31153528"	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\GPU	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4852	DesktopLayer.exe
4852	DesktopLayer.exe
4852	DesktopLayer.exe
4852	DesktopLayer.exe
4852	DesktopLayer.exe
4852	DesktopLayer.exe
4852	DesktopLayer.exe
4852	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4808	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4808	iexplore.exe
4808	iexplore.exe
2640	IEXPLORE.EXE
2640	IEXPLORE.EXE
2640	IEXPLORE.EXE
2640	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 4256	4800	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f.exe	83
PID 4800 wrote to memory of 4256	4800	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f.exe	83
PID 4800 wrote to memory of 4256	4800	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f.exe	83
PID 4256 wrote to memory of 4852	4256	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe	84
PID 4256 wrote to memory of 4852	4256	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe	84
PID 4256 wrote to memory of 4852	4256	81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe	84
PID 4852 wrote to memory of 4808	4852	DesktopLayer.exe	85
PID 4852 wrote to memory of 4808	4852	DesktopLayer.exe	85
PID 4808 wrote to memory of 2640	4808	iexplore.exe	86
PID 4808 wrote to memory of 2640	4808	iexplore.exe	86
PID 4808 wrote to memory of 2640	4808	iexplore.exe	86

C:\Users\Admin\AppData\Local\Temp\81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f.exe
"C:\Users\Admin\AppData\Local\Temp\81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Users\Admin\AppData\Local\Temp\81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe
  C:\Users\Admin\AppData\Local\Temp\81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4256
- - 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:4852
  - - 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:4808
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4808 CREDAT:17410 /prefetch:2
        5⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

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
d3ef026dd88e6e5106ac84f80286c124

SHA1
75062b0190d63b6ee191c2d3fd7deed40520a363

SHA256
2ecb929a03fb648afd921206e9f84eebfe98b3b343061e6d2e5bbf3a1d02619c

SHA512
809dafd4a0fb9c3c22d3fff05ebb4c025b35a69b514ddb082565a14b3543581f1c430532b6dec2dd4da97a4c9b9818b57d91dcc6f91a3a5425f5a65a078cf64e

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

Filesize
404B

MD5
50c7810fff51d39e4d534842af899442

SHA1
0be73554dcb12eb4f4a9ff06e5bee73f1ea2c6ec

SHA256
0de13501cf25d0c4d9dcccd1ef62c1879b53427a946e9cba9ae17e6929467464

SHA512
21a0fc8ae451b6edb7a89b33ee1cb10e4113da96ce0dfa1fd8f5216a4a8ea5262e7a7152d565ec07c40321c9876db70eeac3ae3756090b41faeca901690aa56d

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\81fb3d7407c2748969ca07dbaccf9fbb67c808a4e63b9b890ef0e85e78b81d8fSrv.exe

Filesize
52KB

MD5
17efb7e40d4cadaf3a4369435a8772ec

SHA1
eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

SHA256
f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

SHA512
522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

Download Submit
memory/4256-4-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4256-6-0x0000000002030000-0x0000000002032000-memory.dmp

Filesize
8KB

Download
memory/4256-8-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4256-7-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4800-22-0x0000000000510000-0x0000000000536000-memory.dmp

Filesize
152KB

Download
memory/4800-0-0x0000000000510000-0x0000000000536000-memory.dmp

Filesize
152KB

Download
memory/4852-15-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4852-18-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4852-19-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4852-17-0x0000000000530000-0x0000000000531000-memory.dmp

Filesize
4KB

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