44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97

Analysis

max time kernel
244s
max time network
354s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
26-11-2022 23:01

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General

Target

44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe
Size

493KB
MD5

478da40e8bb8fecfe0a5207c0c24559a
SHA1

c71b9560bcf440d0287a3cdc26ae6b0c6205e6fd
SHA256

44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97
SHA512

628841dae19d0856c25244ae2bfec3aa6ebc0bac2ded6eb27d9a6c47d9f4b77ce72b79379a9a90e41093ec3fb389d6fb5adc86f769ba92e463c480e7d7a2c52f
SSDEEP

6144:RddK+PdCABOmXoiIbPQsnYNBOglvkcMvHER0u+GIIIIIIIhIIIIIIIIIIIIIIIUY:rdeADXhsPQsnYug3Mvkm5Y

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

steamwebhelper.exe

pid process

1928 steamwebhelper.exe

pid	process
1928	steamwebhelper.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exesteamwebhelper.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	steamwebhelper.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exesteamwebhelper.exe

pid process

1868 44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe
1928 steamwebhelper.exe

pid	process
1868	44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe
1928	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exesteamwebhelper.exe

description	pid	process
Token: SeDebugPrivilege	1868	44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe
Token: SeDebugPrivilege	1928	steamwebhelper.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe

description	pid	process	target process
PID 1868 wrote to memory of 1928	1868	44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe	steamwebhelper.exe
PID 1868 wrote to memory of 1928	1868	44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe	steamwebhelper.exe
PID 1868 wrote to memory of 1928	1868	44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe	steamwebhelper.exe

C:\Users\Admin\AppData\Local\Temp\44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe
"C:\Users\Admin\AppData\Local\Temp\44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1868

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
"C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1928

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
Filesize
493KB

MD5
478da40e8bb8fecfe0a5207c0c24559a

SHA1
c71b9560bcf440d0287a3cdc26ae6b0c6205e6fd

SHA256
44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97

SHA512
628841dae19d0856c25244ae2bfec3aa6ebc0bac2ded6eb27d9a6c47d9f4b77ce72b79379a9a90e41093ec3fb389d6fb5adc86f769ba92e463c480e7d7a2c52f

Download Submit
C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
Filesize
493KB

MD5
478da40e8bb8fecfe0a5207c0c24559a

SHA1
c71b9560bcf440d0287a3cdc26ae6b0c6205e6fd

SHA256
44aaa16d7c76344c22bab04bee6c73f9553de9378c5203b8768f6f01c2110c97

SHA512
628841dae19d0856c25244ae2bfec3aa6ebc0bac2ded6eb27d9a6c47d9f4b77ce72b79379a9a90e41093ec3fb389d6fb5adc86f769ba92e463c480e7d7a2c52f

Download Submit
memory/1868-54-0x0000000000B00000-0x0000000000B80000-memory.dmp

Filesize
512KB

Download
memory/1868-55-0x0000000000540000-0x0000000000576000-memory.dmp

Filesize
216KB

Download
memory/1868-56-0x0000000000150000-0x0000000000156000-memory.dmp

Filesize
24KB

Download
memory/1868-57-0x000007FEFBFD1000-0x000007FEFBFD3000-memory.dmp

Filesize
8KB

Download
memory/1928-58-0x0000000000000000-mapping.dmp

Download
memory/1928-61-0x0000000000230000-0x00000000002B0000-memory.dmp

Filesize
512KB

Download