646e3806e97cb30657035823db44291d2f82d4c716d4ffb2e0b4841f89030df6

Analysis

max time kernel
148s
max time network
125s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/10/2026, 18:01

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General

Target
jaffacakes118_Trojan-Dropper.Win32.Delf.ac.exe
Size 407KB
Sample261009-wmddcsdc67
SHA256 646e3806e97cb30657035823db44291d2f82d4c716d4ffb2e0b4841f89030df6
MD5 8cb397d8c35e202d838a965b5d1a19b1
SHA1 6a52d63125e6cc31e7eaac87b369bec8377bb728
SHA512 81a97262b0e851724aaba21ce9e7063b03198f2051f89b0506a017c4dd15547b517f8d635c6e29b20b0009f574396658abf9c4c253c57697e89682176d2d385d
SSDEEP 6144:C6nednGryBW3yQbvWCqHyfD4sC9WYl3N342PlSNuNngFU2/IYLDF:C6n8GWZfCjo9r3VvQuNgFU2Tl
TLSH
T162946B23E7D05477D1231A3C9D9B5B78982ABE102B2869C76BF91C4C4F3A2C17939397
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
3672	w32sys.exe
5044	bnc.exe
3240	w32sys.exe
3360	bnc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\W32SYS = "C:\\Windows\\w32sys.exe"	w32sys.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\W32SYS = "C:\\Windows\\w32sys.exe"	w32sys.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\bnc.exe	w32sys.exe
File created	C:\Windows\bnc.cfg	w32sys.exe
File created	C:\Windows\bnc.pid	bnc.exe
File created	C:\Windows\w32sys.exe	jaffacakes118_Trojan-Dropper.Win32.Delf.ac.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	w32sys.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	w32sys.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	w32sys.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	w32sys.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_Trojan-Dropper.Win32.Delf.ac.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	w32sys.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bnc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	w32sys.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3236	jaffacakes118_Trojan-Dropper.Win32.Delf.ac.exe
3236	jaffacakes118_Trojan-Dropper.Win32.Delf.ac.exe
3672	w32sys.exe
3672	w32sys.exe
3240	w32sys.exe
3240	w32sys.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3236 wrote to memory of 3672	3236	jaffacakes118_Trojan-Dropper.Win32.Delf.ac.exe	88
PID 3672 wrote to memory of 5044	3672	w32sys.exe	89
PID 3240 wrote to memory of 3360	3240	w32sys.exe	93

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Delf.ac.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Delf.ac.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3236
- C:\Windows\w32sys.exe
  C:\Windows\w32sys.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3672
- - C:\Windows\bnc.exe
    C:\Windows\bnc.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5044

C:\Windows\w32sys.exe
C:\Windows\w32sys.exe
1⤵
- Executes dropped EXE
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Windows\bnc.exe
  C:\Windows\bnc.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:3360

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

bnc.cfg

Path C:\Windows\bnc.cfg
Size 98B
SHA256 a489a14c2400467f1535abc715990342a949181ade239bb2b2d8f23a8ab94bf9
MD5 aebfb99f4a583ded7732846022a0139d
SHA1 e8aa89711b91006e1316e7f62ac72c49d04fb519
SHA512 3de3a1764a5ba08c5f21a0090f15ad0a280f71826238cc0b4e5bf529348b8e6e6a5a36442d16c3ecc4385b61ef2f16f985fdc79296c16efb48c4bc50e9e62c07
TLSH
T1E0B012BA5703217D04B310879D0C3C0D444301440C770F055039BDC2136425C0908011
MD5 SHA1 SHA512 TLSH

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bnc.exe

Path C:\Windows\bnc.exe
Size 48KB
SHA256 47ba673f747083382e7a03b97ac1177e86a6c3b7f242b51c9d021213c75c37ff
MD5 419d87451f9aa483e69bc47c967a7536
SHA1 d8e3fc92304124449cfc66ec6c1e839d7ea3b396
SHA512 ffcd87a64cc3ed672fc9a233fcdb0b61039113bb1fe1047db1ff66ad891b6b0e68dc83b224b7e796b32d961703390d6c8969ea29e0cbb1d5d22e7f3b4be4393b
SSDEEP 1536:57GcxhQNh4/Pi+0bPDXjnvs9VdUMc+/IYF1:tGTSS+MrXwFUM5/IYF1
TLSH
T1F22338ABFAC181F2D8B45B7D21F71B7AA93B6A75432745C3C3804C7458238D0A93979E
MD5 SHA1 SHA512 SSDEEP TLSH

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w32sys.exe

Path C:\Windows\w32sys.exe
Size 407KB
SHA256 646e3806e97cb30657035823db44291d2f82d4c716d4ffb2e0b4841f89030df6
MD5 8cb397d8c35e202d838a965b5d1a19b1
SHA1 6a52d63125e6cc31e7eaac87b369bec8377bb728
SHA512 81a97262b0e851724aaba21ce9e7063b03198f2051f89b0506a017c4dd15547b517f8d635c6e29b20b0009f574396658abf9c4c253c57697e89682176d2d385d
SSDEEP 6144:C6nednGryBW3yQbvWCqHyfD4sC9WYl3N342PlSNuNngFU2/IYLDF:C6n8GWZfCjo9r3VvQuNgFU2Tl
TLSH
T162946B23E7D05477D1231A3C9D9B5B78982ABE102B2869C76BF91C4C4F3A2C17939397
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3236-1-0x000000000044F000-0x0000000000450000-memory.dmp

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memory/3236-0-0x0000000002360000-0x0000000002361000-memory.dmp

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memory/3236-16-0x0000000000400000-0x000000000046C000-memory.dmp

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memory/3240-12-0x0000000000400000-0x000000000046C000-memory.dmp

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memory/3240-19-0x0000000000400000-0x000000000046C000-memory.dmp

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memory/3672-3-0x0000000000400000-0x000000000046C000-memory.dmp

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memory/3672-7-0x0000000000400000-0x000000000046C000-memory.dmp

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memory/3672-17-0x0000000000400000-0x000000000046C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads