Analysis
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max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
21-04-2024 16:26
Static task
static1
Behavioral task
behavioral1
Sample
ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe
Resource
win7-20240221-en
General
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Target
ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe
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Size
688KB
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MD5
ffb31463ba10f652b0dd8bc10e734b46
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SHA1
bfc2c18c7ea8f41823e5e1d89d2971fafa4966dd
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SHA256
8ca049e0699925d3ea76cb769814c220c410f29eae2f862ddbb03361e5a92d73
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SHA512
7cbc5aa59554d36eaf0daab10e1c7353b068cb65fb2afe225ef4812e43c90b1d0681c17c0924816a27850277c8b3b39fd388c72232b57615220dbbac9976a2e6
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SSDEEP
12288:Xx3TRu7iS/d3486AVmnmnk8RE9P6aowdJ5bUB0XKXHK:XZRxS/d3Y0RRE1Jq6XKa
Malware Config
Extracted
nanocore
1.2.2.0
91.193.75.228:1985
127.0.0.1:1985
76ab9a6f-655c-4b06-a052-5a2cb9e07a2f
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2021-05-07T21:13:54.381433036Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
false
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
1985
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default_group
KingT
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
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mutex
76ab9a6f-655c-4b06-a052-5a2cb9e07a2f
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mutex_timeout
5000
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prevent_system_sleep
true
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primary_connection_host
91.193.75.228
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primary_dns_server
8.8.8.8
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request_elevation
true
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restart_delay
5000
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run_delay
0
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run_on_startup
false
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Signatures
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CustAttr .NET packer 1 IoCs
Detects CustAttr .NET packer in memory.
Processes:
resource yara_rule behavioral2/memory/4656-7-0x0000000006870000-0x0000000006882000-memory.dmp CustAttr -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exedescription pid process target process PID 4656 set thread context of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegSvcs.exedescription ioc process File created C:\Program Files (x86)\SMTP Subsystem\smtpss.exe RegSvcs.exe File opened for modification C:\Program Files (x86)\SMTP Subsystem\smtpss.exe RegSvcs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exepowershell.exeRegSvcs.exepid process 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe 1948 powershell.exe 1948 powershell.exe 4688 RegSvcs.exe 4688 RegSvcs.exe 4688 RegSvcs.exe 4688 RegSvcs.exe 1948 powershell.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegSvcs.exepid process 4688 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exepowershell.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe Token: SeDebugPrivilege 1948 powershell.exe Token: SeDebugPrivilege 4688 RegSvcs.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exedescription pid process target process PID 4656 wrote to memory of 1948 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe powershell.exe PID 4656 wrote to memory of 1948 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe powershell.exe PID 4656 wrote to memory of 1948 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe powershell.exe PID 4656 wrote to memory of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe PID 4656 wrote to memory of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe PID 4656 wrote to memory of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe PID 4656 wrote to memory of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe PID 4656 wrote to memory of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe PID 4656 wrote to memory of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe PID 4656 wrote to memory of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe PID 4656 wrote to memory of 4688 4656 ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4656 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1948 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4688
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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=3700 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:81⤵PID:3348
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82