502ccd94a1e7744941ab2bc6ee448107b17d026490cfdf7c02146045088efa18

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
16-03-2023 04:09

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General

Target

bK53.exe
Size

23KB
MD5

bdc8185a8b270395984b7f63f1072107
SHA1

03ff66716e034bd799405fb630d3f334c62534cb
SHA256

502ccd94a1e7744941ab2bc6ee448107b17d026490cfdf7c02146045088efa18
SHA512

e019ccfe2e28c49307e7510c1f9c90b97ffe0313b1c9f18752188bcc5df1265220b28903ae4f68b7c425b8a71b47ac3d7a883722a56aca2c76044904bcb9ab68
SSDEEP

384:fcqbCK0l4h7o9SVyDGvENuh46/gJkOmMSW38mRvR6JZlbw8hqIusZzZz2:E30py6vhxaRpcnuh

Score

8^/10

evasion

Malware Config

Signatures

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2000	netsh.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeDebugPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe
Token: 33	1084	bK53.exe
Token: SeIncBasePriorityPrivilege	1084	bK53.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1084 wrote to memory of 2000	1084	bK53.exe	28
PID 1084 wrote to memory of 2000	1084	bK53.exe	28
PID 1084 wrote to memory of 2000	1084	bK53.exe	28
PID 1084 wrote to memory of 2000	1084	bK53.exe	28

C:\Users\Admin\AppData\Local\Temp\bK53.exe
"C:\Users\Admin\AppData\Local\Temp\bK53.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\bK53.exe" "bK53.exe" ENABLE
  2⤵
  - Modifies Windows Firewall
  PID:2000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1084-54-0x00000000004B0000-0x00000000004F0000-memory.dmp

Filesize
256KB

Download
memory/1084-55-0x00000000004B0000-0x00000000004F0000-memory.dmp

Filesize
256KB

Download