09edb74c964edd38ba8a471698f5f983c959d048bad56c6a66dfeeb6f9c65647

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
05/10/2023, 19:30

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General

Target

b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe
Size

56KB
MD5

b3b0a773ef7fd8bdcc8d0ccf9e0fe217
SHA1

322ce5c9ab888489b612a22aac2a2fb49139b307
SHA256

09edb74c964edd38ba8a471698f5f983c959d048bad56c6a66dfeeb6f9c65647
SHA512

f666cdc13b78818f5320d7f91610637d82414cdd9bc8f3fae8d65a12cca84fbf09dde6e17c73bce662ad567f12091251e504f7fd35849b4978d421a12f250476
SSDEEP

384:+5rDuuOFpEauMLfQDb2pproT/z4D1O1GJE6Al6z/yXuTLhrw:MDcpEBMLfQcubc1IGE96jyXuTLdw

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
4116	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-1-5-21-919254492-3979293997-764407192-1000\Control Panel\International\Geo\Nation	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
1212	uauhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\uauhost.exe	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe
File opened for modification	C:\Windows\Debug\uauhost.exe	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe
File opened for modification	C:\Windows\Debug\uauhost.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	3404	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3404 wrote to memory of 4116	3404	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	85
PID 3404 wrote to memory of 4116	3404	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	85
PID 3404 wrote to memory of 4116	3404	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	85
PID 3404 wrote to memory of 5104	3404	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	89
PID 3404 wrote to memory of 5104	3404	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	89
PID 3404 wrote to memory of 5104	3404	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4116	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe
"C:\Users\Admin\AppData\Local\Temp\b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\uauhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:4116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B3B0A7~1.EXE > nul
  2⤵
  PID:5104

C:\Windows\Debug\uauhost.exe
C:\Windows\Debug\uauhost.exe
1⤵
- Executes dropped EXE
PID:1212

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\uauhost.exe

Filesize
56KB

MD5
24923f288fe578631f1b13fb287a6d68

SHA1
d73ec34e0b889939015e416a113b3b6cc850db67

SHA256
d8496c841f9d2e5d4a2e0c6a70134b74323fb6ac783375b492e00299353440aa

SHA512
a067b0a917def34be7dda85df5e6390f78038b308c8f91e018fcce0ab7d41049185d84493d4ed4b5873d249a3aa2eef889db15883138cb55cb057bdfe053ed8e

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C:\Windows\debug\uauhost.exe

Filesize
56KB

MD5
24923f288fe578631f1b13fb287a6d68

SHA1
d73ec34e0b889939015e416a113b3b6cc850db67

SHA256
d8496c841f9d2e5d4a2e0c6a70134b74323fb6ac783375b492e00299353440aa

SHA512
a067b0a917def34be7dda85df5e6390f78038b308c8f91e018fcce0ab7d41049185d84493d4ed4b5873d249a3aa2eef889db15883138cb55cb057bdfe053ed8e

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads