Analysis
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max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
04/12/2022, 11:11
Static task
static1
Behavioral task
behavioral1
Sample
3995a9a2bcd8da259d9df6a8b0b4615dfb0c3236f8fd0ab0c65d034e3d506396.dll
Resource
win7-20220812-en
windows7-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
3995a9a2bcd8da259d9df6a8b0b4615dfb0c3236f8fd0ab0c65d034e3d506396.dll
Resource
win10v2004-20221111-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
3995a9a2bcd8da259d9df6a8b0b4615dfb0c3236f8fd0ab0c65d034e3d506396.dll
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Size
73KB
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MD5
77e94c42e5cda17d1022d780a93d2a98
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SHA1
50b60b4368dbaffd3ff186fc47f763cfaa27293a
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SHA256
3995a9a2bcd8da259d9df6a8b0b4615dfb0c3236f8fd0ab0c65d034e3d506396
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SHA512
9c0c9b4fcbf43093f3cd716e5bb02568af1808fe7342de473630449c2112658716be9b068450a5130b3d16acdf97b86eb6c23310a4e4db1962108a7be65807db
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SSDEEP
1536:omVJdMmJyDl+t7LZpoWyHjmgQifdsW9Uz2X+Ox:ogJuIyDCZRyHj9QGiqUCu+
Score
8/10
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 968 hrlE9A4.tmp 1532 rcflye.exe -
Loads dropped DLL 3 IoCs
pid Process 916 rundll32.exe 916 rundll32.exe 1532 rcflye.exe -
Enumerates connected drives 3 TTPs 44 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\P: rcflye.exe File opened (read-only) \??\U: rcflye.exe File opened (read-only) \??\V: rcflye.exe File opened (read-only) \??\X: rcflye.exe File opened (read-only) \??\G: rundll32.exe File opened (read-only) \??\I: rcflye.exe File opened (read-only) \??\E: rcflye.exe File opened (read-only) \??\Q: rcflye.exe File opened (read-only) \??\S: rcflye.exe File opened (read-only) \??\U: rundll32.exe File opened (read-only) \??\Z: rundll32.exe File opened (read-only) \??\F: rcflye.exe File opened (read-only) \??\M: rcflye.exe File opened (read-only) \??\T: rcflye.exe File opened (read-only) \??\I: rundll32.exe File opened (read-only) \??\J: rundll32.exe File opened (read-only) \??\W: rcflye.exe File opened (read-only) \??\L: rundll32.exe File opened (read-only) \??\N: rcflye.exe File opened (read-only) \??\T: rundll32.exe File opened (read-only) \??\V: rundll32.exe File opened (read-only) \??\G: rcflye.exe File opened (read-only) \??\J: rcflye.exe File opened (read-only) \??\K: rcflye.exe File opened (read-only) \??\M: rundll32.exe File opened (read-only) \??\R: rundll32.exe File opened (read-only) \??\N: rundll32.exe File opened (read-only) \??\Y: rundll32.exe File opened (read-only) \??\H: rcflye.exe File opened (read-only) \??\L: rcflye.exe File opened (read-only) \??\E: rundll32.exe File opened (read-only) \??\K: rundll32.exe File opened (read-only) \??\Q: rundll32.exe File opened (read-only) \??\S: rundll32.exe File opened (read-only) \??\W: rundll32.exe File opened (read-only) \??\X: rundll32.exe File opened (read-only) \??\R: rcflye.exe File opened (read-only) \??\Y: rcflye.exe File opened (read-only) \??\H: rundll32.exe File opened (read-only) \??\O: rundll32.exe File opened (read-only) \??\Z: rcflye.exe File opened (read-only) \??\O: rcflye.exe File opened (read-only) \??\F: rundll32.exe File opened (read-only) \??\P: rundll32.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\rcflye.exe hrlE9A4.tmp File opened for modification C:\Windows\SysWOW64\rcflye.exe hrlE9A4.tmp File created C:\Windows\SysWOW64\hra33.dll rcflye.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files\7-Zip\lpk.dll rcflye.exe File opened for modification C:\Program Files\7-Zip\lpk.dll rcflye.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 968 hrlE9A4.tmp 1532 rcflye.exe -
Suspicious behavior: MapViewOfSection 49 IoCs
pid Process 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 968 hrlE9A4.tmp 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe 1532 rcflye.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 968 hrlE9A4.tmp Token: SeDebugPrivilege 1532 rcflye.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 968 hrlE9A4.tmp 968 hrlE9A4.tmp 1532 rcflye.exe 1532 rcflye.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1848 wrote to memory of 916 1848 rundll32.exe 28 PID 1848 wrote to memory of 916 1848 rundll32.exe 28 PID 1848 wrote to memory of 916 1848 rundll32.exe 28 PID 1848 wrote to memory of 916 1848 rundll32.exe 28 PID 1848 wrote to memory of 916 1848 rundll32.exe 28 PID 1848 wrote to memory of 916 1848 rundll32.exe 28 PID 1848 wrote to memory of 916 1848 rundll32.exe 28 PID 916 wrote to memory of 968 916 rundll32.exe 29 PID 916 wrote to memory of 968 916 rundll32.exe 29 PID 916 wrote to memory of 968 916 rundll32.exe 29 PID 916 wrote to memory of 968 916 rundll32.exe 29 PID 968 wrote to memory of 368 968 hrlE9A4.tmp 25 PID 968 wrote to memory of 368 968 hrlE9A4.tmp 25 PID 968 wrote to memory of 368 968 hrlE9A4.tmp 25 PID 968 wrote to memory of 368 968 hrlE9A4.tmp 25 PID 968 wrote to memory of 368 968 hrlE9A4.tmp 25 PID 968 wrote to memory of 368 968 hrlE9A4.tmp 25 PID 968 wrote to memory of 368 968 hrlE9A4.tmp 25 PID 968 wrote to memory of 384 968 hrlE9A4.tmp 4 PID 968 wrote to memory of 384 968 hrlE9A4.tmp 4 PID 968 wrote to memory of 384 968 hrlE9A4.tmp 4 PID 968 wrote to memory of 384 968 hrlE9A4.tmp 4 PID 968 wrote to memory of 384 968 hrlE9A4.tmp 4 PID 968 wrote to memory of 384 968 hrlE9A4.tmp 4 PID 968 wrote to memory of 384 968 hrlE9A4.tmp 4 PID 968 wrote to memory of 420 968 hrlE9A4.tmp 3 PID 968 wrote to memory of 420 968 hrlE9A4.tmp 3 PID 968 wrote to memory of 420 968 hrlE9A4.tmp 3 PID 968 wrote to memory of 420 968 hrlE9A4.tmp 3 PID 968 wrote to memory of 420 968 hrlE9A4.tmp 3 PID 968 wrote to memory of 420 968 hrlE9A4.tmp 3 PID 968 wrote to memory of 420 968 hrlE9A4.tmp 3 PID 968 wrote to memory of 468 968 hrlE9A4.tmp 2 PID 968 wrote to memory of 468 968 hrlE9A4.tmp 2 PID 968 wrote to memory of 468 968 hrlE9A4.tmp 2 PID 968 wrote to memory of 468 968 hrlE9A4.tmp 2 PID 968 wrote to memory of 468 968 hrlE9A4.tmp 2 PID 968 wrote to memory of 468 968 hrlE9A4.tmp 2 PID 968 wrote to memory of 468 968 hrlE9A4.tmp 2 PID 968 wrote to memory of 484 968 hrlE9A4.tmp 1 PID 968 wrote to memory of 484 968 hrlE9A4.tmp 1 PID 968 wrote to memory of 484 968 hrlE9A4.tmp 1 PID 968 wrote to memory of 484 968 hrlE9A4.tmp 1 PID 968 wrote to memory of 484 968 hrlE9A4.tmp 1 PID 968 wrote to memory of 484 968 hrlE9A4.tmp 1 PID 968 wrote to memory of 484 968 hrlE9A4.tmp 1 PID 968 wrote to memory of 492 968 hrlE9A4.tmp 24 PID 968 wrote to memory of 492 968 hrlE9A4.tmp 24 PID 968 wrote to memory of 492 968 hrlE9A4.tmp 24 PID 968 wrote to memory of 492 968 hrlE9A4.tmp 24 PID 968 wrote to memory of 492 968 hrlE9A4.tmp 24 PID 968 wrote to memory of 492 968 hrlE9A4.tmp 24 PID 968 wrote to memory of 492 968 hrlE9A4.tmp 24 PID 968 wrote to memory of 608 968 hrlE9A4.tmp 23 PID 968 wrote to memory of 608 968 hrlE9A4.tmp 23 PID 968 wrote to memory of 608 968 hrlE9A4.tmp 23 PID 968 wrote to memory of 608 968 hrlE9A4.tmp 23 PID 968 wrote to memory of 608 968 hrlE9A4.tmp 23 PID 968 wrote to memory of 608 968 hrlE9A4.tmp 23 PID 968 wrote to memory of 608 968 hrlE9A4.tmp 23 PID 968 wrote to memory of 684 968 hrlE9A4.tmp 22 PID 968 wrote to memory of 684 968 hrlE9A4.tmp 22 PID 968 wrote to memory of 684 968 hrlE9A4.tmp 22 PID 968 wrote to memory of 684 968 hrlE9A4.tmp 22
Processes
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C:\Windows\system32\lsass.exeC:\Windows\system32\lsass.exe1⤵PID:484
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C:\Windows\system32\services.exeC:\Windows\system32\services.exe1⤵PID:468
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkService2⤵PID:296
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C:\Windows\system32\sppsvc.exeC:\Windows\system32\sppsvc.exe2⤵PID:1036
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation2⤵PID:1820
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C:\Windows\system32\taskhost.exe"taskhost.exe"2⤵PID:1128
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNoNetwork2⤵PID:1088
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C:\Windows\System32\spoolsv.exeC:\Windows\System32\spoolsv.exe2⤵PID:112
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs2⤵PID:892
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService2⤵PID:844
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted2⤵PID:816
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted2⤵PID:752
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k RPCSS2⤵PID:684
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch2⤵PID:608
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C:\Windows\SysWOW64\rcflye.exeC:\Windows\SysWOW64\rcflye.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1532
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:420
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C:\Windows\system32\csrss.exe%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=161⤵PID:384
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C:\Windows\system32\wbem\wmiprvse.exeC:\Windows\system32\wbem\wmiprvse.exe1⤵PID:1960
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\\?\C:\Windows\system32\wbem\WMIADAP.EXEwmiadap.exe /F /T /R1⤵PID:1992
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1216
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3995a9a2bcd8da259d9df6a8b0b4615dfb0c3236f8fd0ab0c65d034e3d506396.dll,#12⤵
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3995a9a2bcd8da259d9df6a8b0b4615dfb0c3236f8fd0ab0c65d034e3d506396.dll,#13⤵
- Loads dropped DLL
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:916 -
C:\Users\Admin\AppData\Local\Temp\hrlE9A4.tmpC:\Users\Admin\AppData\Local\Temp\hrlE9A4.tmp4⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:968
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C:\Windows\system32\Dwm.exe"C:\Windows\system32\Dwm.exe"1⤵PID:1188
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C:\Windows\system32\lsm.exeC:\Windows\system32\lsm.exe1⤵PID:492
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C:\Windows\system32\wininit.exewininit.exe1⤵PID:368
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
65KB
MD5c639fbcf3d0131711f15d5aa1b82e490
SHA1c31553db91295fa020af4cdeac405ec3355aa88f
SHA256c599fbae010fc0556785d5b71d07ba475c3b4f3293ffeb78f099e8ae32e68f9a
SHA5123d0daefd3e5dfa269e43c04195bfba97380c3b79e51e5b4b6e5ebaa5adde14367cc9091e3aadc562793d141e3c11b8b56fc274fad41ddcbe0caf2affcab2ecbc
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Filesize
65KB
MD5c639fbcf3d0131711f15d5aa1b82e490
SHA1c31553db91295fa020af4cdeac405ec3355aa88f
SHA256c599fbae010fc0556785d5b71d07ba475c3b4f3293ffeb78f099e8ae32e68f9a
SHA5123d0daefd3e5dfa269e43c04195bfba97380c3b79e51e5b4b6e5ebaa5adde14367cc9091e3aadc562793d141e3c11b8b56fc274fad41ddcbe0caf2affcab2ecbc
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Filesize
65KB
MD5c639fbcf3d0131711f15d5aa1b82e490
SHA1c31553db91295fa020af4cdeac405ec3355aa88f
SHA256c599fbae010fc0556785d5b71d07ba475c3b4f3293ffeb78f099e8ae32e68f9a
SHA5123d0daefd3e5dfa269e43c04195bfba97380c3b79e51e5b4b6e5ebaa5adde14367cc9091e3aadc562793d141e3c11b8b56fc274fad41ddcbe0caf2affcab2ecbc
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Filesize
65KB
MD5c639fbcf3d0131711f15d5aa1b82e490
SHA1c31553db91295fa020af4cdeac405ec3355aa88f
SHA256c599fbae010fc0556785d5b71d07ba475c3b4f3293ffeb78f099e8ae32e68f9a
SHA5123d0daefd3e5dfa269e43c04195bfba97380c3b79e51e5b4b6e5ebaa5adde14367cc9091e3aadc562793d141e3c11b8b56fc274fad41ddcbe0caf2affcab2ecbc
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Filesize
65KB
MD5c639fbcf3d0131711f15d5aa1b82e490
SHA1c31553db91295fa020af4cdeac405ec3355aa88f
SHA256c599fbae010fc0556785d5b71d07ba475c3b4f3293ffeb78f099e8ae32e68f9a
SHA5123d0daefd3e5dfa269e43c04195bfba97380c3b79e51e5b4b6e5ebaa5adde14367cc9091e3aadc562793d141e3c11b8b56fc274fad41ddcbe0caf2affcab2ecbc
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Filesize
65KB
MD5c639fbcf3d0131711f15d5aa1b82e490
SHA1c31553db91295fa020af4cdeac405ec3355aa88f
SHA256c599fbae010fc0556785d5b71d07ba475c3b4f3293ffeb78f099e8ae32e68f9a
SHA5123d0daefd3e5dfa269e43c04195bfba97380c3b79e51e5b4b6e5ebaa5adde14367cc9091e3aadc562793d141e3c11b8b56fc274fad41ddcbe0caf2affcab2ecbc
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Filesize
73KB
MD577e94c42e5cda17d1022d780a93d2a98
SHA150b60b4368dbaffd3ff186fc47f763cfaa27293a
SHA2563995a9a2bcd8da259d9df6a8b0b4615dfb0c3236f8fd0ab0c65d034e3d506396
SHA5129c0c9b4fcbf43093f3cd716e5bb02568af1808fe7342de473630449c2112658716be9b068450a5130b3d16acdf97b86eb6c23310a4e4db1962108a7be65807db