Analysis
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max time kernel
146s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
13-11-2024 13:28
Static task
static1
Behavioral task
behavioral1
Sample
db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe
Resource
win10v2004-20241007-en
General
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Target
db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe
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Size
203KB
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MD5
3e0950e80ecfffd7ae7e266aff2018bd
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SHA1
77bd5c50eae58e042e0a7c6608015a5665428894
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SHA256
db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922
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SHA512
ec7f5a0a30e21d65baa947acb1f88085754aa29da49e6c1f89dce8d114579fbf77f1353b98827fb8d0b375dc9ac1e3e586e621e99ec33e485295924109fff379
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SSDEEP
3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTO:X2vnSwjaOcADw9cUeCOfc
Malware Config
Signatures
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Deletes itself 1 IoCs
Processes:
crivr.exepid Process 2956 crivr.exe -
Executes dropped EXE 2 IoCs
Processes:
crivr.exesfu.exepid Process 2956 crivr.exe 1444 sfu.exe -
Loads dropped DLL 7 IoCs
Processes:
cmd.execrivr.exesfu.exepid Process 2692 cmd.exe 2692 cmd.exe 2956 crivr.exe 1444 sfu.exe 1444 sfu.exe 1444 sfu.exe 1444 sfu.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
sfu.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\efsif\\sfu.exe \"c:\\Program Files\\efsif\\sfuzh.dll\",Compliance" sfu.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
sfu.exedescription ioc Process File opened (read-only) \??\u: sfu.exe File opened (read-only) \??\x: sfu.exe File opened (read-only) \??\z: sfu.exe File opened (read-only) \??\j: sfu.exe File opened (read-only) \??\k: sfu.exe File opened (read-only) \??\t: sfu.exe File opened (read-only) \??\l: sfu.exe File opened (read-only) \??\o: sfu.exe File opened (read-only) \??\w: sfu.exe File opened (read-only) \??\y: sfu.exe File opened (read-only) \??\a: sfu.exe File opened (read-only) \??\b: sfu.exe File opened (read-only) \??\i: sfu.exe File opened (read-only) \??\s: sfu.exe File opened (read-only) \??\v: sfu.exe File opened (read-only) \??\g: sfu.exe File opened (read-only) \??\n: sfu.exe File opened (read-only) \??\q: sfu.exe File opened (read-only) \??\p: sfu.exe File opened (read-only) \??\r: sfu.exe File opened (read-only) \??\e: sfu.exe File opened (read-only) \??\h: sfu.exe File opened (read-only) \??\m: sfu.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
sfu.exedescription ioc Process File opened for modification \??\PHYSICALDRIVE0 sfu.exe -
Drops file in Program Files directory 4 IoCs
Processes:
crivr.exedescription ioc Process File opened for modification \??\c:\Program Files\efsif crivr.exe File created \??\c:\Program Files\efsif\sfuzh.dll crivr.exe File created \??\c:\Program Files\efsif\sfu.exe crivr.exe File opened for modification \??\c:\Program Files\efsif\sfu.exe crivr.exe -
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
crivr.exesfu.exedb16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.execmd.exePING.EXEdescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language crivr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sfu.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
Processes:
PING.EXEcmd.exepid Process 3020 PING.EXE 2692 cmd.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
sfu.exedescription ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 sfu.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString sfu.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
sfu.exepid Process 1444 sfu.exe 1444 sfu.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
sfu.exedescription pid Process Token: SeDebugPrivilege 1444 sfu.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.execrivr.exepid Process 2128 db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe 2956 crivr.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.execmd.execrivr.exedescription pid Process procid_target PID 2128 wrote to memory of 2692 2128 db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe 31 PID 2128 wrote to memory of 2692 2128 db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe 31 PID 2128 wrote to memory of 2692 2128 db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe 31 PID 2128 wrote to memory of 2692 2128 db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe 31 PID 2692 wrote to memory of 3020 2692 cmd.exe 33 PID 2692 wrote to memory of 3020 2692 cmd.exe 33 PID 2692 wrote to memory of 3020 2692 cmd.exe 33 PID 2692 wrote to memory of 3020 2692 cmd.exe 33 PID 2692 wrote to memory of 2956 2692 cmd.exe 34 PID 2692 wrote to memory of 2956 2692 cmd.exe 34 PID 2692 wrote to memory of 2956 2692 cmd.exe 34 PID 2692 wrote to memory of 2956 2692 cmd.exe 34 PID 2956 wrote to memory of 1444 2956 crivr.exe 35 PID 2956 wrote to memory of 1444 2956 crivr.exe 35 PID 2956 wrote to memory of 1444 2956 crivr.exe 35 PID 2956 wrote to memory of 1444 2956 crivr.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe"C:\Users\Admin\AppData\Local\Temp\db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2128 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\crivr.exe "C:\Users\Admin\AppData\Local\Temp\db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe"2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2692 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:3020
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C:\Users\Admin\AppData\Local\Temp\crivr.exeC:\Users\Admin\AppData\Local\Temp\\crivr.exe "C:\Users\Admin\AppData\Local\Temp\db16f294b80c3e14ddbed1ffecce363376e363c4d4318655a103618b44ad6922.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2956 -
\??\c:\Program Files\efsif\sfu.exe"c:\Program Files\efsif\sfu.exe" "c:\Program Files\efsif\sfuzh.dll",Compliance C:\Users\Admin\AppData\Local\Temp\crivr.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1444
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
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Downloads
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Filesize
141KB
MD5eed6d6149ae327a6d8a5cbd7cd5a2e60
SHA1637dc935f68b192bbc39661d77e848a1335a0f08
SHA256547cc880d44b10e729de104a51a8efe13be605468df29ce2ad8c5b2766e8c33d
SHA512d9349811c4da1aa63834858b35dd7ec2ae7c65c2f1d0aeecb1867fbfcac107d9ca4a5bd43793c7ccf5ce9e300e0c003f2df5a0be6ffbc13d36fbe3ea0aabe98b
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Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d
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Filesize
203KB
MD5b74e39bc02b7e999791ea419bd6260fa
SHA17131f431fe7852f94e622b8f28d807d3140e8bec
SHA2560d1190ca2570bede1ad77486cbc42dee8664ce79e19efd62319492660efbef3f
SHA51207803e9dd10404ce9ebb4f06b48d9eed09e1693ae2f53bb92ebe9dc4478d941a0fc191e70a3fdaf70e28fe58b282557592aa2912afcc2cc7b3483937e638a1c1