8e83a1727696ced618289f79674b97305d88beeeabf46bd25fc77ac53c1ae339

Analysis

user interaction
yes
max time kernel
18s
max time network
17s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/10/2026, 08:25

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General

Target
LBLeak/Build.bat
Size 741B
Sample261002-kbe72astes
SHA256 8e83a1727696ced618289f79674b97305d88beeeabf46bd25fc77ac53c1ae339
MD5 4e46e28b2e61643f6af70a8b19e5cb1f
SHA1 804a1d0c4a280b18e778e4b97f85562fa6d5a4e6
SHA512 009b17b515ff0ea612e54d8751eef07f1e2b54db07e6cd69a95e7adf775f3c79a0ea91bff2fe593f2314807fdc00c75d80f1807b7dbe90f0fcf94607e675047b
TLSH
T19001E173C48A3873585A9C24E5F5DB25DFFF3BC69A43904ED118632D822602156362EF
MD5 SHA1 SHA512 TLSH

Score

3^/10

discovery execution

Malware Config

Signatures

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1500	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	keygen.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 3244	1500	cmd.exe	89
PID 1500 wrote to memory of 1312	1500	cmd.exe	90
PID 1500 wrote to memory of 5176	1500	cmd.exe	91
PID 1500 wrote to memory of 5516	1500	cmd.exe	92
PID 1500 wrote to memory of 5788	1500	cmd.exe	93
PID 1500 wrote to memory of 4540	1500	cmd.exe	94
PID 1500 wrote to memory of 2836	1500	cmd.exe	95

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\LBLeak\Build.bat"
1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:1500
- C:\Users\Admin\AppData\Local\Temp\LBLeak\keygen.exe
  keygen -path C:\Users\Admin\AppData\Local\Temp\LBLeak\Build -pubkey pub.key -privkey priv.key
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3244
- C:\Users\Admin\AppData\Local\Temp\LBLeak\builder.exe
  builder -type dec -privkey C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\priv.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\LB3Decryptor.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1312
- C:\Users\Admin\AppData\Local\Temp\LBLeak\builder.exe
  builder -type enc -exe -pubkey C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\LB3.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5176
- C:\Users\Admin\AppData\Local\Temp\LBLeak\builder.exe
  builder -type enc -exe -pass -pubkey C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\LB3_pass.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5516
- C:\Users\Admin\AppData\Local\Temp\LBLeak\builder.exe
  builder -type enc -dll -pubkey C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\LB3_Rundll32.dll
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5788
- C:\Users\Admin\AppData\Local\Temp\LBLeak\builder.exe
  builder -type enc -dll -pass -pubkey C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\LB3_Rundll32_pass.dll
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4540
- C:\Users\Admin\AppData\Local\Temp\LBLeak\builder.exe
  builder -type enc -ref -pubkey C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\LB3_ReflectiveDll_DllMain.dll
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

priv.key

Path C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\priv.key
Size 344B
SHA256 243af6ef3ce1a9e88988eed5b5f2796dcc24a166dae0bba870d3123fd78b4da8
MD5 eab8a1f1ddaebb30d1e938a5e595ce88
SHA1 ad0521eaa52b5e3f624bae981a5a779ccb67c66e
SHA512 63d901ff34fd378cda275ddf0ff31e25f03f50ebd8539cf31d1da35b9cba469c1e3fa7c6aea35ce738ddecfb7620c104ccbdff30dd30effdcbe38685d0bfb6e5
TLSH
T153E0C61082A02E5EFB8468373807E7A1212C019B3BCD7A0F8AA048860213A22903A325
MD5 SHA1 SHA512 TLSH

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pub.key

Path C:\Users\Admin\AppData\Local\Temp\LBLeak\Build\pub.key
Size 344B
SHA256 63dcec2e64e51ece6d39ce9b02cd067b0a940295ea3c8e74722ac35f039f506b
MD5 c035bffa6ac15123f9b22b8fc1e566fa
SHA1 7368ff15b210c2b43520ec49d7fd554ee86fb217
SHA512 552e332abbf9f91393a36e66eeb9ab83def45d1e90e187a08f04e3c287be663091f757fa39a8e91c7fae8d2fb38c45c759aa29fb2a8840cb6f6eeeab39e3396f
TLSH
T1DEE080715258BF55F68474632447F7947D2C010735DE6D5D84E04CCD1621511595C715
MD5 SHA1 SHA512 TLSH