ramnit | 8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7

Analysis

max time kernel
136s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/11/2022, 20:57

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General

Target

8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7.exe
Size

167KB
MD5

0e8aec649b6184b87017518613163b40
SHA1

80144917ac96f4026b096a77c565cece067bffa1
SHA256

8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7
SHA512

7b76ff21964adab82bd89edb9d50809b694ef61418c308f71a855ec017c01817c1b471ef76ecaea56dc6d17c4a60e8dcc77d40fe3655866b2ba4fd30f6dccc81
SSDEEP

3072:kxggQDO6tb2L62bjTD7bfC5XQfsPlcWLOwNgQMMaaritJsmxIEFnB/5z:8EOw/2bfDvfC5XQfsyLwJsJHnB/5

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

pid	Process
2520	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe
680	DesktopLayer.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000022f67-134.dat	upx
behavioral2/files/0x0007000000022f67-135.dat	upx
behavioral2/files/0x0007000000022f6c-137.dat	upx
behavioral2/memory/2520-138-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/680-140-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0007000000022f6c-141.dat	upx
behavioral2/memory/680-142-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxFDAE.tmp	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30995048"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374563163"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30995048"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30995048"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{48907F1E-5E5B-11ED-AECB-E62D9FD3CB0B} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "525679425"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "525679425"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "708806475"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
680	DesktopLayer.exe
680	DesktopLayer.exe
680	DesktopLayer.exe
680	DesktopLayer.exe
680	DesktopLayer.exe
680	DesktopLayer.exe
680	DesktopLayer.exe
680	DesktopLayer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4856	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4856	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4856	iexplore.exe
4856	iexplore.exe
3232	IEXPLORE.EXE
3232	IEXPLORE.EXE
3232	IEXPLORE.EXE
3232	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 2520	4740	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7.exe	80
PID 4740 wrote to memory of 2520	4740	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7.exe	80
PID 4740 wrote to memory of 2520	4740	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7.exe	80
PID 2520 wrote to memory of 680	2520	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe	81
PID 2520 wrote to memory of 680	2520	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe	81
PID 2520 wrote to memory of 680	2520	8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe	81
PID 680 wrote to memory of 4856	680	DesktopLayer.exe	82
PID 680 wrote to memory of 4856	680	DesktopLayer.exe	82
PID 4856 wrote to memory of 3232	4856	iexplore.exe	83
PID 4856 wrote to memory of 3232	4856	iexplore.exe	83
PID 4856 wrote to memory of 3232	4856	iexplore.exe	83

C:\Users\Admin\AppData\Local\Temp\8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7.exe
"C:\Users\Admin\AppData\Local\Temp\8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Users\Admin\AppData\Local\Temp\8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe
  C:\Users\Admin\AppData\Local\Temp\8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:680
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4856
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4856 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3232

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
471B

MD5
0ef90204485649be625ea2be1b9018fb

SHA1
28fbc0852140ec51d0c097a4962a160afa4d754b

SHA256
c8028acd9a8c8c795b87cf835fc3182d003264608f161baa0ca020711b22bca0

SHA512
b8bbba0dcc6cb6f87efb47a605953c93fcf93c5a65520b822ebfee25754632d6bb66c2a946f457e1e40a92556683ddb9d14f2703782833e12d7e37bb3b7fcec5

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

Filesize
434B

MD5
3d753e607e3ec4c144a4581af8acea88

SHA1
0078f63b9729198067c4983ccd275c3d0f0de416

SHA256
cf50964f57805e80d5693d2656bb6043a763b72626b2c24b35f4f26eecdd59e9

SHA512
6fb58028d1ef868b6d187cc32532c7530171d9a07da6f19ac0701e5569aaccc53d64188b95d50b955ee3ee4eba7e111b13b762ce70dc4a239e6073b6cd176f94

Download Submit
C:\Users\Admin\AppData\Local\Temp\8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\8c1d27b736e32989f5ac09e6b04b2a47cd908e31427bc6269eab7447edd1b0e7Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/680-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/680-142-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2520-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2520-139-0x0000000000580000-0x000000000058F000-memory.dmp

Filesize
60KB

Download
memory/4740-143-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4740-144-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4740-132-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download