e1a3b1a7b3f392fcad1c1fd1104e09b64040f5464c8cecd8a0168a4b6056bae6

Analysis

max time kernel
141s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 10:47

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General

Target

4a8bddd108ca8374fbd710cb750c4c5c.exe
Size

95KB
MD5

4a8bddd108ca8374fbd710cb750c4c5c
SHA1

f633b6580d1903eb8f3c5c9bbccc406f7a532c2f
SHA256

e1a3b1a7b3f392fcad1c1fd1104e09b64040f5464c8cecd8a0168a4b6056bae6
SHA512

e04aab60a8b8ce657967d02e79292b6322b87f63e993940906a3d19d9c3f9897f1139cf0c53c8989495821ccbcab8589ab61bf75e961c332767a8544e0cb3887
SSDEEP

1536:lDcfLfIb5Ep1uzgyXVdtnlHNWnnn3CCCCrrDRe6661:lD2LTnuzgyXVd1xIDU6661

Score

8^/10

evasion

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
216	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	4a8bddd108ca8374fbd710cb750c4c5c.exe

Executes dropped EXE 1 IoCs

pid	Process
464	aiyhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\aiyhost.exe	4a8bddd108ca8374fbd710cb750c4c5c.exe
File opened for modification	C:\Windows\Debug\aiyhost.exe	4a8bddd108ca8374fbd710cb750c4c5c.exe
File opened for modification	C:\Windows\Debug\aiyhost.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	4420	4a8bddd108ca8374fbd710cb750c4c5c.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 216	4420	4a8bddd108ca8374fbd710cb750c4c5c.exe	83
PID 4420 wrote to memory of 216	4420	4a8bddd108ca8374fbd710cb750c4c5c.exe	83
PID 4420 wrote to memory of 216	4420	4a8bddd108ca8374fbd710cb750c4c5c.exe	83
PID 4420 wrote to memory of 1128	4420	4a8bddd108ca8374fbd710cb750c4c5c.exe	89
PID 4420 wrote to memory of 1128	4420	4a8bddd108ca8374fbd710cb750c4c5c.exe	89
PID 4420 wrote to memory of 1128	4420	4a8bddd108ca8374fbd710cb750c4c5c.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
216	attrib.exe

C:\Users\Admin\AppData\Local\Temp\4a8bddd108ca8374fbd710cb750c4c5c.exe
"C:\Users\Admin\AppData\Local\Temp\4a8bddd108ca8374fbd710cb750c4c5c.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4420
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\aiyhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\4A8BDD~1.EXE > nul
  2⤵
  PID:1128

C:\Windows\Debug\aiyhost.exe
C:\Windows\Debug\aiyhost.exe
1⤵
- Executes dropped EXE
PID:464

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\debug\aiyhost.exe

Filesize
95KB

MD5
204fa649d276244bc50222f14cf83407

SHA1
385aab2f3a8b32467f689669795f3d2c29d133d4

SHA256
a5c4f3a3309cf1bad7fd15b6e14bccf15b0c5c4697e8ca655de506c25abe2438

SHA512
abf1de0c7e96989feb7caeda7ea5132ccc8918d0e43cc30715dc9155798db37e0fcf4352468d04a73cbdccdeb475e08f6184b3095a6f5ba1a7b6b261f9ab058f

Download Submit
memory/464-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/464-7-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4420-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4420-6-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads