e85d5b53626307eb032ccfe4ba7e1441a88af81062e5afe8a69f1d283b4f3ea9

Resubmissions

11-10-2024 14:50

241011-r7wcfsxhkf 10

11-10-2024 14:47

241011-r5zbbssgrp 10

Analysis

max time kernel
59s
max time network
49s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
11-10-2024 14:50

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General

Target

default.exe
Size

4.2MB
MD5

589903101622ead17fb90da578086962
SHA1

8c0b3b771ac79959dc155166bf22495b3197b97d
SHA256

e85d5b53626307eb032ccfe4ba7e1441a88af81062e5afe8a69f1d283b4f3ea9
SHA512

49b74af8105878f6d7e491f6bb56d23ad8cb28e317a0c99a1ac36b7aa4948610e3d171a2b64a58fd3fab83ba48691f58bf033462a592fa61bbdd6cb9e49a47fd
SSDEEP

49152:UTgmiz2o3rioSPZQpAookqlq40imXDUZei3xRxwcCjg5835S2m:UcfbiV9U5/3HE58p

Score

7^/10

credential_access discovery stealer

Malware Config

Signatures

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/2528-1-0x00000000009B0000-0x0000000000DEC000-memory.dmp	net_reactor

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2528 set thread context of 2776	2528	default.exe	29

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	default.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1904	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2776	MSBuild.exe
2776	MSBuild.exe
2776	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	default.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2528 wrote to memory of 2776	2528	default.exe	29
PID 2776 wrote to memory of 2204	2776	MSBuild.exe	32
PID 2776 wrote to memory of 2204	2776	MSBuild.exe	32
PID 2776 wrote to memory of 2204	2776	MSBuild.exe	32
PID 2776 wrote to memory of 2204	2776	MSBuild.exe	32
PID 2204 wrote to memory of 1904	2204	cmd.exe	34
PID 2204 wrote to memory of 1904	2204	cmd.exe	34
PID 2204 wrote to memory of 1904	2204	cmd.exe	34
PID 2204 wrote to memory of 1904	2204	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\default.exe
"C:\Users\Admin\AppData\Local\Temp\default.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & rd /s /q "C:\ProgramData\KEBFBGDGHIIJ" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2204
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab5218.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar523A.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2528-44-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-5-0x0000000002230000-0x0000000002238000-memory.dmp

Filesize
32KB

Download
memory/2528-4-0x0000000004780000-0x000000000487A000-memory.dmp

Filesize
1000KB

Download
memory/2528-42-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-6-0x0000000002240000-0x000000000225C000-memory.dmp

Filesize
112KB

Download
memory/2528-7-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-46-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-8-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-34-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-63-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-67-0x0000000074BC0000-0x00000000752AE000-memory.dmp

Filesize
6.9MB

Download
memory/2528-66-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-64-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-61-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-58-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-40-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-54-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-52-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-50-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-48-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-2-0x0000000074BC0000-0x00000000752AE000-memory.dmp

Filesize
6.9MB

Download
memory/2528-3-0x00000000009A0000-0x00000000009AA000-memory.dmp

Filesize
40KB

Download
memory/2528-56-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-38-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-36-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-32-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-30-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-28-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-26-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-24-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-22-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-21-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-18-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-16-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-15-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-12-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-10-0x0000000002240000-0x0000000002255000-memory.dmp

Filesize
84KB

Download
memory/2528-1-0x00000000009B0000-0x0000000000DEC000-memory.dmp

Filesize
4.2MB

Download
memory/2528-0-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

Filesize
4KB

Download
memory/2528-79-0x0000000074BC0000-0x00000000752AE000-memory.dmp

Filesize
6.9MB

Download
memory/2776-70-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2776-71-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2776-69-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download