e632f6bb10cf0c3aa84bb2cddf770d25c887c8e0c213e4cde12edce6f5c3a4de

Analysis

max time kernel
45s
platform
windows11-21h2_x64
resource
win11-20250313-en
resource tags

arch:x64arch:x86image:win11-20250313-enlocale:en-usos:windows11-21h2-x64system
submitted
31/03/2025, 21:39

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General

Target

Rebound cleaned.rar
Size

7.1MB
MD5

36b500a94e380648d5600f1a3c9e7e18
SHA1

3d4c1d094ceea523af5140fe01c4e45c346dcb8c
SHA256

e632f6bb10cf0c3aa84bb2cddf770d25c887c8e0c213e4cde12edce6f5c3a4de
SHA512

58145d9d87c04e427d82daf3819deb5ba279916ec679333bc816727b0c30c5a5894274451854671b1901539a8a789ad04766a2b10ee5a9de2c753e1f09ddec30
SSDEEP

196608:EbsOSrF7vviY8PGJTwvWRhrlFzyQmlxcv2d4pq+:zOSrhxZTFRjsQmmp7

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4272	Rebound Server.exe
688	Rebound Server.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2864	4272	WerFault.exe	84
4156	688	WerFault.exe	90

System Location Discovery: System Language Discovery 1 TTPs 2 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	Rebound Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Rebound Server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3636	7zFM.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	3636	7zFM.exe
Token: 35	3636	7zFM.exe
Token: SeSecurityPrivilege	3636	7zFM.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3636	7zFM.exe
3636	7zFM.exe

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Rebound cleaned.rar"
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3636

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1512

C:\Users\Admin\Desktop\Rebound\Rebound\Rebound Server.exe
"C:\Users\Admin\Desktop\Rebound\Rebound\Rebound Server.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4272
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4272 -s 796
  2⤵
  - Program crash
  PID:2864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4272 -ip 4272
1⤵
PID:804

C:\Users\Admin\Desktop\Rebound\Rebound\Rebound Server.exe
"C:\Users\Admin\Desktop\Rebound\Rebound\Rebound Server.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 688 -s 764
  2⤵
  - Program crash
  PID:4156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 688 -ip 688
1⤵
PID:2464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\7zE43EB7597\Rebound\Rebound\country_flags\sj.png

Filesize
1KB

MD5
a74dab3185ca47f60c3eb2a023cbb723

SHA1
496e6dd69c241ba662c9d91a6274a1477a4d8f23

SHA256
5bd80f95e6698c93044e18885ca1d234cc802b0b1e720d31e1d37b36eb6f4e5f

SHA512
508ee8bd337a54ef243a3539f5c64140bc90a7c223c473849cad27ddfbe7b1c6489b72819591c92c5954d59adb91f91dd7f923220d47c9db23e94f72fe2f3d9d

Download Submit
C:\Users\Admin\Desktop\Rebound\Rebound\Rebound Server.exe

Filesize
4.8MB

MD5
1215f4bd3d67150c9a339e693f73ef21

SHA1
38524ea5ee304eed197e25799ceb19e2db5e4bc9

SHA256
ab9dabcb61d18c22ae9d265955d5aebd013ee6b8b2a00a91b8488bbfb92ee57b

SHA512
200fbcb4bc41be2ace086a1f4a86ce64e0a4bb464c1be8e6a4871d410b63265a9e1e9ab00919404254399c6fede055d6082ed2edf0613834eb2b9f794793eb15

Download Submit
memory/688-609-0x0000000074F80000-0x000000007502B000-memory.dmp

Filesize
684KB

Download
memory/4272-606-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/4272-607-0x0000000000D80000-0x000000000125E000-memory.dmp

Filesize
4.9MB

Download