ramnit | a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14

Analysis

max time kernel
117s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2022, 10:35

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General

Target

a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14.exe
Size

892KB
MD5

1bef42c95ca61b738b459b9c48f7c1e0
SHA1

1c2119f0c5fac62a54a78dbd9cfa32018a917aa7
SHA256

a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14
SHA512

e58f0bda2985fc7641ab6f69e85a5125b7ce86dffd9e90a29539663d0924f14b32453fdcc8d65389fbb88818083136f12dccda4c8c38058cf957623ee8c2413a
SSDEEP

24576:aQRvNENgL3cxDgUEesiHYo5OrP5+KtK930UZI/Z:pEjVgUEesiHYo5OrP5+KtK930UZq

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
384	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe
3964	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000a000000022dfd-134.dat	upx
behavioral2/files/0x000a000000022dfd-135.dat	upx
behavioral2/files/0x0009000000022e0e-137.dat	upx
behavioral2/files/0x0009000000022e0e-138.dat	upx
behavioral2/memory/384-140-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3964-141-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px791D.tmp	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30997917"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2184832248"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2194208809"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997917"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997917"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{ADAEFA0B-6990-11ED-BF5F-E2CDD1D11107} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2184832248"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375795538"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3964	DesktopLayer.exe
3964	DesktopLayer.exe
3964	DesktopLayer.exe
3964	DesktopLayer.exe
3964	DesktopLayer.exe
3964	DesktopLayer.exe
3964	DesktopLayer.exe
3964	DesktopLayer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
912	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
912	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
912	iexplore.exe
912	iexplore.exe
4736	IEXPLORE.EXE
4736	IEXPLORE.EXE
4736	IEXPLORE.EXE
4736	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 384	1684	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14.exe	84
PID 1684 wrote to memory of 384	1684	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14.exe	84
PID 1684 wrote to memory of 384	1684	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14.exe	84
PID 384 wrote to memory of 3964	384	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe	85
PID 384 wrote to memory of 3964	384	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe	85
PID 384 wrote to memory of 3964	384	a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe	85
PID 3964 wrote to memory of 912	3964	DesktopLayer.exe	86
PID 3964 wrote to memory of 912	3964	DesktopLayer.exe	86
PID 912 wrote to memory of 4736	912	iexplore.exe	87
PID 912 wrote to memory of 4736	912	iexplore.exe	87
PID 912 wrote to memory of 4736	912	iexplore.exe	87

C:\Users\Admin\AppData\Local\Temp\a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14.exe
"C:\Users\Admin\AppData\Local\Temp\a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Users\Admin\AppData\Local\Temp\a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe
  C:\Users\Admin\AppData\Local\Temp\a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:384
- - 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:3964
  - - 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:912
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:912 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4736

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
6df395096ecd4495391458b01010ecb2

SHA1
2f1dc39b55265fd6219172e40362c1240506470a

SHA256
6439a7a722864b1920d0307e0fb2eb95207b22010005086b5856646a51f2a7e0

SHA512
eb333fbf74de85ca8bb66dc1c286f71d744e929e614bd056b73fa5161f26e89ef5028d4f729f02de3438ef519bc74968cb0c25428a880efe523121182bb65803

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

Filesize
434B

MD5
acd4ffe5a6d532897b6bb554b454c52b

SHA1
6d8ddef19a3a891815ec97830f3a16e5b73446bb

SHA256
c4e679ecf262df51d02a0dd69748f3134c5dd04a25723411f42979a3dbf6ce21

SHA512
e2b9af5be0e7cf92de3e6fb697783356047faac13de2b87be511b90f963fa2050ab98e3ae132fb74ce0e9d65298a8a9134b6d422f141357b6537bb0278e11158

Download Submit
C:\Users\Admin\AppData\Local\Temp\a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\a15b4af5b1f2fe5f6eaccf86d456611082eebfe77c9f13251d4763049e914c14Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/384-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1684-132-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/1684-139-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/3964-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download