60da0200f3a3ed4c5328f6c6488bb8868c2e228fbd99bd1ea9fa5c3761170c19

Analysis

max time kernel
140s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/01/2024, 15:41

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General

Target

bca2dcc6f1aa83bd763c8a423c7ad268.exe
Size

156KB
MD5

bca2dcc6f1aa83bd763c8a423c7ad268
SHA1

d46debc4e02485cf31c407f5fbf89185216e439b
SHA256

60da0200f3a3ed4c5328f6c6488bb8868c2e228fbd99bd1ea9fa5c3761170c19
SHA512

e0a91a4691dd2700044ff5f7e3efdbd042e30d48ff1bd51a66642da349cc763bd811d549e01d9c218c4ac3e8d6002b6122ba140c0b2485d2219c1e4ade21698e
SSDEEP

384:+BdCJAKQDuuOFZyUVpULCgDb2prxVTw24I+6Al6zKyXKKDglgTlkgUH/a4QR:MdCyTDcZyUpULCgodM96eyX5OfVm

Score

8^/10

evasion upx

Malware Config

Signatures

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
2112	attrib.exe

Deletes itself 1 IoCs

pid	Process
2060	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3000	ayahost.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3000-5-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/memory/1696-0-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/memory/3000-6-0x0000000000400000-0x0000000000427000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	bca2dcc6f1aa83bd763c8a423c7ad268.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	bca2dcc6f1aa83bd763c8a423c7ad268.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	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 2112	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe	16
PID 1696 wrote to memory of 2112	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe	16
PID 1696 wrote to memory of 2112	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe	16
PID 1696 wrote to memory of 2112	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe	16
PID 1696 wrote to memory of 2060	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe	21
PID 1696 wrote to memory of 2060	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe	21
PID 1696 wrote to memory of 2060	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe	21
PID 1696 wrote to memory of 2060	1696	bca2dcc6f1aa83bd763c8a423c7ad268.exe	21

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2112	attrib.exe

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
PID:3000

C:\Windows\SysWOW64\attrib.exe
attrib +a +s +h +r C:\Windows\Debug\ayahost.exe
1⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:2112

C:\Users\Admin\AppData\Local\Temp\bca2dcc6f1aa83bd763c8a423c7ad268.exe
"C:\Users\Admin\AppData\Local\Temp\bca2dcc6f1aa83bd763c8a423c7ad268.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\BCA2DC~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2060

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

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Downloads

memory/1696-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3000-5-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3000-6-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads