b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
1781s
max time network
1800s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
13-12-2024 18:01

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General

Target

The-MALWARE-Repo-master/Worm/Bumerang.exe
Size

26KB
MD5

b6c78677b83c0a5b02f48648a9b8e86d
SHA1

0d90c40d2e9e8c58c1dafb528d6eab45e15fda81
SHA256

706fce69fea67622b03fafb51ece076c1fdd38892318f8cce9f2ec80aabca822
SHA512

302acca8c5dd310f86b65104f7accd290014e38d354e97e4ffafe1702b0a13b90e4823c274b51bcc9285419e69ff7111343ac0a64fd3c8b67c48d7bbd382337b
SSDEEP

768:K8uYMZTBv1/nGyURhRkCxnjC0VjDT9zG:KbTpBlUnRfhfT9

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4968	ddraw32.dll
4268	ddraw32.dll

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ddraw32.dll	Bumerang.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral22/memory/3044-0-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral22/files/0x000400000004585b-4.dat	upx
behavioral22/memory/3044-8-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral22/memory/4268-13-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral22/memory/4968-14-0x0000000000400000-0x0000000000410000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4652	4968	WerFault.exe	80

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	Bumerang.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ddraw32.dll

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 4968	3044	Bumerang.exe	80
PID 3044 wrote to memory of 4968	3044	Bumerang.exe	80
PID 3044 wrote to memory of 4968	3044	Bumerang.exe	80
PID 3044 wrote to memory of 4268	3044	Bumerang.exe	81
PID 3044 wrote to memory of 4268	3044	Bumerang.exe	81
PID 3044 wrote to memory of 4268	3044	Bumerang.exe	81

C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Worm\Bumerang.exe
"C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Worm\Bumerang.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\ddraw32.dll
  C:\Windows\system32\ddraw32.dll
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4968
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 368
    3⤵
    - Program crash
    PID:4652
- C:\Windows\SysWOW64\ddraw32.dll
  C:\Windows\system32\ddraw32.dll :C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Worm\Bumerang.exe
  2⤵
  - Executes dropped EXE
  PID:4268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4968 -ip 4968
1⤵
PID:1584

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ddraw32.dll

Filesize
22KB

MD5
f1ac5c806ed1e188c54e0861cbf1f358

SHA1
b2a2895a0eae5e2ef8d10ed0f079d0fcfea9585a

SHA256
87b7d23ab8720f1087d50a902244cbbdc25245b29da9bfa54698a4545b82afc4

SHA512
ddb61b46a71db7401984e1917f0ef1498883cff76f0a98ff8d65acb08b6d7181511ca57a1e23c7482fc9d26afcf48b662896375b80eff4b2e0d08b7b55d9b98f

Download Submit
memory/3044-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3044-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4268-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4968-14-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download