adedffa71c26b2855f85a6eba9f0415769efc743022f44a8f61c95b09b7dedf3

General

Target

New Year Order 18723TW.exe
Size

977KB
MD5

b88cceefb601f1e7facc131eb499e688
SHA1

a156dc254a4d6f6978ef7bf35846ac593dd0c8a6
SHA256

adedffa71c26b2855f85a6eba9f0415769efc743022f44a8f61c95b09b7dedf3
SHA512

6bba774dc893f33e587632f2dc22efb4bc71c1e0588fb42565fbbea5306c6c9b42021c7f46f64e7230df648be7a7e811ad732392ee9db9838e2ff4f7983e323c

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1528	bnnjk.exe
2568	InstallUtil.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\nmhjnm = "C:\\Users\\Admin\\AppData\\Roaming\\bnnjk.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1528 set thread context of 2568	1528	bnnjk.exe	82

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
8	New Year Order 18723TW.exe
1528	bnnjk.exe
1528	bnnjk.exe
2568	InstallUtil.exe
2568	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	8	New Year Order 18723TW.exe
Token: SeDebugPrivilege	1528	bnnjk.exe
Token: SeDebugPrivilege	2568	InstallUtil.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 8 wrote to memory of 2824	8	New Year Order 18723TW.exe	75
PID 8 wrote to memory of 2824	8	New Year Order 18723TW.exe	75
PID 8 wrote to memory of 2824	8	New Year Order 18723TW.exe	75
PID 2824 wrote to memory of 816	2824	cmd.exe	77
PID 2824 wrote to memory of 816	2824	cmd.exe	77
PID 2824 wrote to memory of 816	2824	cmd.exe	77
PID 8 wrote to memory of 1528	8	New Year Order 18723TW.exe	81
PID 8 wrote to memory of 1528	8	New Year Order 18723TW.exe	81
PID 8 wrote to memory of 1528	8	New Year Order 18723TW.exe	81
PID 1528 wrote to memory of 2568	1528	bnnjk.exe	82
PID 1528 wrote to memory of 2568	1528	bnnjk.exe	82
PID 1528 wrote to memory of 2568	1528	bnnjk.exe	82
PID 1528 wrote to memory of 2568	1528	bnnjk.exe	82
PID 1528 wrote to memory of 2568	1528	bnnjk.exe	82
PID 1528 wrote to memory of 2568	1528	bnnjk.exe	82
PID 1528 wrote to memory of 2568	1528	bnnjk.exe	82
PID 1528 wrote to memory of 2568	1528	bnnjk.exe	82

C:\Users\Admin\AppData\Local\Temp\New Year Order 18723TW.exe
"C:\Users\Admin\AppData\Local\Temp\New Year Order 18723TW.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:8
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "nmhjnm" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\bnnjk.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "nmhjnm" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\bnnjk.exe"
    3⤵
    - Adds Run key to start application
    PID:816
- C:\Users\Admin\AppData\Roaming\bnnjk.exe
  "C:\Users\Admin\AppData\Roaming\bnnjk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1528
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/8-8-0x0000000007310000-0x0000000007311000-memory.dmp

Filesize
4KB

Download
memory/8-3-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/8-2-0x0000000073940000-0x000000007402E000-memory.dmp

Filesize
6.9MB

Download
memory/8-5-0x0000000004960000-0x0000000004961000-memory.dmp

Filesize
4KB

Download
memory/8-6-0x00000000048E0000-0x00000000048FE000-memory.dmp

Filesize
120KB

Download
memory/8-7-0x0000000004950000-0x0000000004951000-memory.dmp

Filesize
4KB

Download
memory/1528-14-0x0000000073940000-0x000000007402E000-memory.dmp

Filesize
6.9MB

Download
memory/1528-21-0x0000000005150000-0x000000000515B000-memory.dmp

Filesize
44KB

Download
memory/1528-22-0x0000000005170000-0x0000000005171000-memory.dmp

Filesize
4KB

Download
memory/2568-23-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2568-27-0x0000000073940000-0x000000007402E000-memory.dmp

Filesize
6.9MB

Download
memory/2568-30-0x0000000005780000-0x0000000005781000-memory.dmp

Filesize
4KB

Download
memory/2568-32-0x00000000056E0000-0x00000000056E1000-memory.dmp

Filesize
4KB

Download
memory/2568-33-0x0000000005F70000-0x0000000005F71000-memory.dmp

Filesize
4KB

Download

Analysis

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