Analysis
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max time kernel
144s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
15-04-2024 21:46
Static task
static1
Behavioral task
behavioral1
Sample
f1fef622821788beb88015c369117693_JaffaCakes118.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
f1fef622821788beb88015c369117693_JaffaCakes118.exe
Resource
win10v2004-20240226-en
General
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Target
f1fef622821788beb88015c369117693_JaffaCakes118.exe
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Size
13.1MB
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MD5
f1fef622821788beb88015c369117693
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SHA1
63b323c8ca7c73beec434ba9f30d98dc4bec9e87
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SHA256
94f8d13f54940706972abc5eac4ce0c559fafa2b4c9f17ce14fe2e368ee5a203
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SHA512
d08c4c2a533bcc40e139ec15e2edc45d9d16cdd3c9a317f545a9e7affb881c2776097c6ccde17deb303adefeb86f36eea9142713012bca2ec2c2dc6219b37aaa
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SSDEEP
98304:12UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUk:1
Malware Config
Extracted
tofsee
43.231.4.7
lazystax.ru
Signatures
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Creates new service(s) 1 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 4420 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\okwunlp\ImagePath = "C:\\Windows\\SysWOW64\\okwunlp\\iyexygwf.exe" svchost.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
f1fef622821788beb88015c369117693_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation f1fef622821788beb88015c369117693_JaffaCakes118.exe -
Deletes itself 1 IoCs
Processes:
svchost.exepid process 4624 svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
iyexygwf.exepid process 1380 iyexygwf.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
iyexygwf.exedescription pid process target process PID 1380 set thread context of 4624 1380 iyexygwf.exe svchost.exe -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exesc.exesc.exepid process 4244 sc.exe 4440 sc.exe 892 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 2500 4820 WerFault.exe f1fef622821788beb88015c369117693_JaffaCakes118.exe 1660 1380 WerFault.exe iyexygwf.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
f1fef622821788beb88015c369117693_JaffaCakes118.exeiyexygwf.exedescription pid process target process PID 4820 wrote to memory of 5060 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe cmd.exe PID 4820 wrote to memory of 5060 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe cmd.exe PID 4820 wrote to memory of 5060 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe cmd.exe PID 4820 wrote to memory of 1364 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe cmd.exe PID 4820 wrote to memory of 1364 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe cmd.exe PID 4820 wrote to memory of 1364 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe cmd.exe PID 4820 wrote to memory of 4244 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 4244 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 4244 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 4440 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 4440 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 4440 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 892 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 892 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 892 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe sc.exe PID 4820 wrote to memory of 4420 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe netsh.exe PID 4820 wrote to memory of 4420 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe netsh.exe PID 4820 wrote to memory of 4420 4820 f1fef622821788beb88015c369117693_JaffaCakes118.exe netsh.exe PID 1380 wrote to memory of 4624 1380 iyexygwf.exe svchost.exe PID 1380 wrote to memory of 4624 1380 iyexygwf.exe svchost.exe PID 1380 wrote to memory of 4624 1380 iyexygwf.exe svchost.exe PID 1380 wrote to memory of 4624 1380 iyexygwf.exe svchost.exe PID 1380 wrote to memory of 4624 1380 iyexygwf.exe svchost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f1fef622821788beb88015c369117693_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\f1fef622821788beb88015c369117693_JaffaCakes118.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4820 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\okwunlp\2⤵PID:5060
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iyexygwf.exe" C:\Windows\SysWOW64\okwunlp\2⤵PID:1364
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create okwunlp binPath= "C:\Windows\SysWOW64\okwunlp\iyexygwf.exe /d\"C:\Users\Admin\AppData\Local\Temp\f1fef622821788beb88015c369117693_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
PID:4244 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description okwunlp "wifi internet conection"2⤵
- Launches sc.exe
PID:4440 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start okwunlp2⤵
- Launches sc.exe
PID:892 -
C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul2⤵
- Modifies Windows Firewall
PID:4420 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 10402⤵
- Program crash
PID:2500
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C:\Windows\SysWOW64\okwunlp\iyexygwf.exeC:\Windows\SysWOW64\okwunlp\iyexygwf.exe /d"C:\Users\Admin\AppData\Local\Temp\f1fef622821788beb88015c369117693_JaffaCakes118.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1380 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
PID:4624 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1380 -s 5322⤵
- Program crash
PID:1660
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4820 -ip 48201⤵PID:5068
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1380 -ip 13801⤵PID:2772
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4748 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:81⤵PID:3496
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
12.3MB
MD57999724f9cabf26ce465e14e1bf9d4c4
SHA1b5a14d806b0e4586ffdfbad02a53dfc9e30bdd17
SHA256862a650390de3ec7f8634d38021ba19b55e06eaef6a0a2ff722e56c43d2fc26b
SHA512b4ea5387e1e3eb4780252c06fabf680ac2d85c01509ce81f8dacedaad7e922a633ba04964e1fb77fba8026463c811ead0cab4b944f4e36d40ae82430bc2f1e49