ramnit | 5b785757a1184e04ab625326f8e5aa4b94a16d3332a73da14de925f81eaf99cc

General

Target

5b785757a1184e04ab625326f8e5aa4b94a16d3332a73da14de925f81eaf99cc.dll
Size

256KB
MD5

bd4aebf56c70da8339ac13607e33e156
SHA1

532d81f4afb40a407d42f13d099454ce31fda35a
SHA256

5b785757a1184e04ab625326f8e5aa4b94a16d3332a73da14de925f81eaf99cc
SHA512

2470a7bf8e15493ba70e2c36ffc4246cb862b7d96a157ba8135a80cb2ee247b1c8825600019c0f7d24610e362040f507ea6d3b1dbac3e16b79f7f7f6a5b9f517
SSDEEP

3072:zn4cV8gf2u41Z5tKlFxwHdIWKc8DAGhn8D5sAxvEbzNmBTq/lSKVtB/LFYYSNGGz:74y8gOl2COc8rWD5n+9sTq9TVbRYK6Bd

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 4 IoCs

pid	Process
2448	rundll32Srv.exe
4748	rundll32Srvmgr.exe
2388	DesktopLayer.exe
3184	DesktopLayermgr.exe

Loads dropped DLL 2 IoCs

pid	Process
4748	rundll32Srvmgr.exe
3184	DesktopLayermgr.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe
File created	C:\Windows\SysWOW64\rundll32Srvmgr.exe	rundll32Srv.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2448-6-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral2/memory/2448-13-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral2/files/0x000b000000023b99-14.dat	upx
behavioral2/memory/4748-19-0x0000000000400000-0x000000000042A000-memory.dmp	upx
behavioral2/memory/2388-31-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral2/memory/2388-26-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral2/memory/2388-18-0x0000000000400000-0x000000000044A000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\DesktopLayermgr.exe	DesktopLayer.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px8E55.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
640	3184	WerFault.exe	86
3604	4748	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 6 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	rundll32Srv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32Srvmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DesktopLayer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DesktopLayermgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 26 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31157024"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\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-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2005505488"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2008630456"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{A2AB35A3-D713-11EF-ADF2-DA67B56E6C1B} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31157024"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "444131458"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2388	DesktopLayer.exe
2388	DesktopLayer.exe
2388	DesktopLayer.exe
2388	DesktopLayer.exe
2388	DesktopLayer.exe
2388	DesktopLayer.exe
2388	DesktopLayer.exe
2388	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2220	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2220	iexplore.exe
2220	iexplore.exe
1016	IEXPLORE.EXE
1016	IEXPLORE.EXE
1016	IEXPLORE.EXE
1016	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4892 wrote to memory of 4884	4892	rundll32.exe	82
PID 4892 wrote to memory of 4884	4892	rundll32.exe	82
PID 4892 wrote to memory of 4884	4892	rundll32.exe	82
PID 4884 wrote to memory of 2448	4884	rundll32.exe	83
PID 4884 wrote to memory of 2448	4884	rundll32.exe	83
PID 4884 wrote to memory of 2448	4884	rundll32.exe	83
PID 2448 wrote to memory of 4748	2448	rundll32Srv.exe	84
PID 2448 wrote to memory of 4748	2448	rundll32Srv.exe	84
PID 2448 wrote to memory of 4748	2448	rundll32Srv.exe	84
PID 2448 wrote to memory of 2388	2448	rundll32Srv.exe	85
PID 2448 wrote to memory of 2388	2448	rundll32Srv.exe	85
PID 2448 wrote to memory of 2388	2448	rundll32Srv.exe	85
PID 2388 wrote to memory of 3184	2388	DesktopLayer.exe	86
PID 2388 wrote to memory of 3184	2388	DesktopLayer.exe	86
PID 2388 wrote to memory of 3184	2388	DesktopLayer.exe	86
PID 2388 wrote to memory of 2220	2388	DesktopLayer.exe	87
PID 2388 wrote to memory of 2220	2388	DesktopLayer.exe	87
PID 2220 wrote to memory of 1016	2220	iexplore.exe	93
PID 2220 wrote to memory of 1016	2220	iexplore.exe	93
PID 2220 wrote to memory of 1016	2220	iexplore.exe	93

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5b785757a1184e04ab625326f8e5aa4b94a16d3332a73da14de925f81eaf99cc.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5b785757a1184e04ab625326f8e5aa4b94a16d3332a73da14de925f81eaf99cc.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4884
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in System32 directory
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2448
  - - C:\Windows\SysWOW64\rundll32Srvmgr.exe
      C:\Windows\SysWOW64\rundll32Srvmgr.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4748
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4748 -s 528
        5⤵
        Program crash
        
        PID:3604
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2388
    - - C:\Program Files (x86)\Microsoft\DesktopLayermgr.exe
        
        "C:\Program Files (x86)\Microsoft\DesktopLayermgr.exe"
        5⤵
        Executes dropped EXE
        Loads dropped DLL
        System Location Discovery: System Language Discovery
        
        PID:3184
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3184 -s 492
        6⤵
        Program crash
        
        PID:640
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2220
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2220 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3184 -ip 3184
1⤵
PID:1752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4748 -ip 4748
1⤵
PID:4056

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

Filesize
163KB

MD5
7062dd643a846a0666e2661950daab70

SHA1
d47b95af9c24c1cb6a51f78fc303a1ab9e46191e

SHA256
adffde2de3be8bdacc200e1091f6f29d1559d5e9ea8d4002cdddf59cf370eb47

SHA512
2bf378ca6ae9162472f5c261f7a55aaa296c6cb77423f2413edff176880f7b1485d5100cd39acea2931f24666c4cbc568ea2850c764c740f0d4e037e64325c21

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

Filesize
106KB

MD5
dcd2cafa72c9d5bd898b636a18133d3c

SHA1
b55e85453de9254cbf4c21c0de92d82c6deefccb

SHA256
936b14fbbf629fcf92ac06673d974de2b2a44a109953e6664e1c36a4e5c9d27c

SHA512
59e475f668015b3a6372d79ea6459b21ae591d73305b7696ef139fe0e716f1038595ea5df079e1850535e6358aef4d8e92bdee68ffd07b44471bc7133041952c

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

Filesize
471B

MD5
0ada2095c461df5a751955aa41dd491e

SHA1
8366c54b31e1ddc8016aa22aab8c83f73c690810

SHA256
80cd542688ed3a45669b53243c3f4922d6eb21a34d8dfeebc6c101484d3bac09

SHA512
135991affe343d4358bb15a693effa7a6813d6715e555729d2aa04a98555e13fded55d3100a41a92a5beb57c68fbdacb199a3e66407944e37880b28d42d79e7c

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

Filesize
404B

MD5
dfdae34e7a430676ad491e68e2f524cf

SHA1
6bd3257ef1f000b4382bfa0ad37d74c9a6c01645

SHA256
74f2a31e0046885ff1a276645e2f40a5ad7b3d714e9bb33582da444411051b56

SHA512
f68e8662dab39b7a8779be6290d22e7c8f2f6cd3947c2f77d7f1007b5daeea7200e4409db372666ded8ee7e09bc8e71603f14debd862b4c5ef00f01915ce82cc

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\PGH3GSHW\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\~TM8EB3.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

Download Submit
memory/2388-26-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2388-31-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2388-24-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/2388-18-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2448-13-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2448-7-0x0000000000570000-0x000000000057F000-memory.dmp

Filesize
60KB

Download
memory/2448-6-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4748-19-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4884-0-0x0000000010000000-0x0000000010041000-memory.dmp

Filesize
260KB

Download

Analysis

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