2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316

General

Target

2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe
Size

453KB
MD5

6e78ddea5e9b567e9afc0511f6fdd0ab
SHA1

3f0cb1a90c76a12536277af1f936a14a62fcfe2a
SHA256

2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316
SHA512

f582e68ed23ba3a620174c281710bf982f48600c1b7ff42e9cb30cec26491a85f799496a3ebad708c0d5504faecbc658919f0b80d32528ac85bf81aa56ebdfbd
SSDEEP

6144:8kLYyvZFsjpHQvXrlHyJzVJot3aERiLTwEYYxNdZ:8kLYyourOWaE0TGY

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2156	sysctl.exe

Loads dropped DLL 2 IoCs

pid	Process
2488	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe
2488	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe

Modifies system executable filetype association 2 TTPs 4 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\realex.exe \"%1\" %*"	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	sysctl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\realex.exe \"%1\" %*"	sysctl.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/files/0x000b00000001222b-4.dat	upx
behavioral1/memory/2488-5-0x0000000001E40000-0x0000000001EA1000-memory.dmp	upx
behavioral1/memory/2156-13-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/2488-15-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/2156-16-0x0000000000400000-0x0000000000461000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\sysctl.exe = "C:\\Windows\\system32\\sysctl.exe"	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sysctl.exe	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe
File created	C:\Windows\SysWOW64\realex.exe	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\realex.exe \"%1\" %*"	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	sysctl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\realex.exe \"%1\" %*"	sysctl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2156	sysctl.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2156	2488	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe	28
PID 2488 wrote to memory of 2156	2488	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe	28
PID 2488 wrote to memory of 2156	2488	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe	28
PID 2488 wrote to memory of 2156	2488	2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe	28

C:\Users\Admin\AppData\Local\Temp\2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe
"C:\Users\Admin\AppData\Local\Temp\2a8a678f8da52aaf164d6cd177ccb29693d1c1b1f32bc0de701a5ec98944a316.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\SysWOW64\sysctl.exe
  C:\Windows\system32\sysctl.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\SysWOW64\sysctl.exe

Filesize
454KB

MD5
25efd80ca212a431d4da611085291c37

SHA1
5807ca3ffd5496c8fdc2bb9fff8a4d45767490f9

SHA256
65535bf80c2cb9d399064b0dc5fa0c47a1b65e8f0917ceca2e0727a5b0c08183

SHA512
b6b2a576e00b4e198a1b94307ed7e5818c33b5b4be1be95c0e95e8d4aa73c3dd88ddddc0beb1d46d97107fcf6d12bc3e8be15a1f2268acc9717e289f7b28f674

Download Submit
memory/2156-13-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2156-14-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2156-16-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2488-0-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2488-1-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2488-5-0x0000000001E40000-0x0000000001EA1000-memory.dmp

Filesize
388KB

Download
memory/2488-12-0x0000000001E40000-0x0000000001EA1000-memory.dmp

Filesize
388KB

Download
memory/2488-15-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads