bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09/06/2024, 07:43

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe
Size 80KB
Sample240609-jka41age49
SHA256 bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab
MD5 ae5e818a9ef0cf433ece45015b650378
SHA1 83d9f4dd4878b7551fff4ab988e68b5efdea92bb
SHA512 8c470b3e279e5425030ebe4354a149d3c769a77980273b457b47cc5ae2be09b4d5a8fb6c06ddf5d98cec258cedc3eb6cca8842ace58b58e3b8526fb5717dd42c
SSDEEP 1536:bDcWLfIbgEp10gyX/dtnTHNWnnn6222229B:bDXL0n0gyX/d1re22229B
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

evasion

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral1/memory/1736-0-0x0000000000400000-0x0000000000410000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x0010000000012272-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/1720-5-0x0000000000400000-0x0000000000410000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/1736-6-0x0000000000400000-0x0000000000410000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/1720-7-0x0000000000400000-0x0000000000410000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1196	attrib.exe

Deletes itself 1 IoCs

pid	Process
2648	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1720	ayahost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	attrib.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 1196	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe	28
PID 1736 wrote to memory of 1196	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe	28
PID 1736 wrote to memory of 1196	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe	28
PID 1736 wrote to memory of 1196	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe	28
PID 1736 wrote to memory of 2648	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe	31
PID 1736 wrote to memory of 2648	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe	31
PID 1736 wrote to memory of 2648	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe	31
PID 1736 wrote to memory of 2648	1736	bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1196	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe
"C:\Users\Admin\AppData\Local\Temp\bacb14277cfed7b68453deea016c27099e8560c05fdc72a3998767d1406528ab.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\ayahost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:1196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\BACB14~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2648

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
PID:1720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

ayahost.exe

Path C:\Windows\Debug\ayahost.exe
Size 80KB
SHA256 21af53f8dafe2e9aaed676f58e1063939ba48e6144587226adf099177569b695
MD5 43dfdcb2bb866e5cca54f3f00533858e
SHA1 b1d4b8e0220c5f0b77280cd91b7b7f6772bdbc4f
SHA512 8be72350fafa38eb994d0418de1c290c124aa15bfcc88405dfbf5f2a1e5ccd041199fb3c638f2268f6cffc4fe963dc6e2f23e0bbb700170b10b0f53c57f1b6d8
SSDEEP 1536:bDcWLfIbgEp10gyX/dtnTHNWnnn6222229G:bDXL0n0gyX/d1re22229G
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1720-5-0x0000000000400000-0x0000000000410000-memory.dmp

Download

memory/1720-7-0x0000000000400000-0x0000000000410000-memory.dmp

Download

memory/1736-0-0x0000000000400000-0x0000000000410000-memory.dmp

Download

memory/1736-6-0x0000000000400000-0x0000000000410000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads