783dbf002227109a372c999fb01e0a6a542ff273dcb8a10e9080ba8d7466a6e8

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
11-01-2023 07:16

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General

Target

cc231df7de4fc3f165eb4fa0b164750306a436ed.exe
Size

551KB
MD5

196b4c60853e8edb24430341e58e01ad
SHA1

cc231df7de4fc3f165eb4fa0b164750306a436ed
SHA256

783dbf002227109a372c999fb01e0a6a542ff273dcb8a10e9080ba8d7466a6e8
SHA512

cef00627249e098c73a56639631462c8e079069553e26cb3b910f93c0509e4ed5514acb5fa3f8741625dc4bac053f5ad282b8924e6428b0e2b4cfd328fa19c42
SSDEEP

12288:kYjCG72h8Hq19i4OK3Kfjrzzux2H4UzRE0qCWFpIa9mtbjqzIRCdcl:kYjdW8Hqri4kfjrexDCREGWqdRCCl

Score

8^/10

spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
28	1036	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
3012	wcfbei.exe
4660	wcfbei.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	wcfbei.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3012 set thread context of 4660	3012	wcfbei.exe	83
PID 4660 set thread context of 1204	4660	wcfbei.exe	54
PID 1036 set thread context of 1204	1036	cmd.exe	54

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1100	4028	WerFault.exe	92

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4660	wcfbei.exe
4660	wcfbei.exe
4660	wcfbei.exe
4660	wcfbei.exe
4660	wcfbei.exe
4660	wcfbei.exe
4660	wcfbei.exe
4660	wcfbei.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1204	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
3012	wcfbei.exe
4660	wcfbei.exe
4660	wcfbei.exe
4660	wcfbei.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe
1036	cmd.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4660	wcfbei.exe
Token: SeDebugPrivilege	1036	cmd.exe
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeCreatePagefilePrivilege	1204	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 3012	2372	cc231df7de4fc3f165eb4fa0b164750306a436ed.exe	82
PID 2372 wrote to memory of 3012	2372	cc231df7de4fc3f165eb4fa0b164750306a436ed.exe	82
PID 2372 wrote to memory of 3012	2372	cc231df7de4fc3f165eb4fa0b164750306a436ed.exe	82
PID 3012 wrote to memory of 4660	3012	wcfbei.exe	83
PID 3012 wrote to memory of 4660	3012	wcfbei.exe	83
PID 3012 wrote to memory of 4660	3012	wcfbei.exe	83
PID 3012 wrote to memory of 4660	3012	wcfbei.exe	83
PID 1204 wrote to memory of 1036	1204	Explorer.EXE	84
PID 1204 wrote to memory of 1036	1204	Explorer.EXE	84
PID 1204 wrote to memory of 1036	1204	Explorer.EXE	84
PID 1036 wrote to memory of 4028	1036	cmd.exe	92
PID 1036 wrote to memory of 4028	1036	cmd.exe	92
PID 1036 wrote to memory of 4028	1036	cmd.exe	92

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\cc231df7de4fc3f165eb4fa0b164750306a436ed.exe
  "C:\Users\Admin\AppData\Local\Temp\cc231df7de4fc3f165eb4fa0b164750306a436ed.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\Users\Admin\AppData\Local\Temp\wcfbei.exe
    "C:\Users\Admin\AppData\Local\Temp\wcfbei.exe" C:\Users\Admin\AppData\Local\Temp\rsrmv.qe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:3012
  - - C:\Users\Admin\AppData\Local\Temp\wcfbei.exe
      "C:\Users\Admin\AppData\Local\Temp\wcfbei.exe"
      4⤵
      Executes dropped EXE
      Checks computer location settings
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:4660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\SysWOW64\cmd.exe"
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:4028
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 4028 -s 184
      4⤵
      Program crash
      PID:1100

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 452 -p 4028 -ip 4028
1⤵
PID:1856

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\gevtqmgfwk.uw

Filesize
205KB

MD5
cb4c04eabe5ffeacfd9251c55e2c5a09

SHA1
55a382f17bce7bba10ca6c7139304bdf4550f377

SHA256
cdee3caff352d6d0bcac49cff41d11e5cb3fd018db3f1547d8fc4f3a988a9fbe

SHA512
bb2fe2cd6b0217e4b4a836bd510549e51f56799d72cd04c419d15ea3bec378eb37200ec3209fc418175f98ed8e8fb54d73b1774cc66ec0b55f2a48805e411d33

Download Submit
C:\Users\Admin\AppData\Local\Temp\rsrmv.qe

Filesize
5KB

MD5
f1aee9a911a8fd2460e455b372ad54b2

SHA1
58412e9c3c5d9ea77f1547c984ad7c189dc74ac3

SHA256
4f7cc698dc5065cda58cee8aa64151a0809c024073b459251e3de89bd9a3ad7f

SHA512
e72b671f89316cc1acde22d0248694f6a3f866a9e3cbca07db415cc9435023a5a1cd15daedddf2c2f26f39b258858f7c5e2a75111507066c95435b1c3e2762c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\wcfbei.exe

Filesize
61KB

MD5
813214f30950ee905f9c31d0a2dcb087

SHA1
ed4080c9b5871961dbf56f904fa7df77bf7c980b

SHA256
735b398be4765d455c5a54da6f6ed6dbabecbe078c01c7db9e28d8eed85286c8

SHA512
caf7fcc72468ad01e554b81e3fab4d54cc8224f922a91597c1b78edb715986e87d44b3dd6b65447cb02d87ba576121fac923c019ba500544a5143b1ebe17eca7

Download Submit
C:\Users\Admin\AppData\Local\Temp\wcfbei.exe

Filesize
61KB

MD5
813214f30950ee905f9c31d0a2dcb087

SHA1
ed4080c9b5871961dbf56f904fa7df77bf7c980b

SHA256
735b398be4765d455c5a54da6f6ed6dbabecbe078c01c7db9e28d8eed85286c8

SHA512
caf7fcc72468ad01e554b81e3fab4d54cc8224f922a91597c1b78edb715986e87d44b3dd6b65447cb02d87ba576121fac923c019ba500544a5143b1ebe17eca7

Download Submit
C:\Users\Admin\AppData\Local\Temp\wcfbei.exe

Filesize
61KB

MD5
813214f30950ee905f9c31d0a2dcb087

SHA1
ed4080c9b5871961dbf56f904fa7df77bf7c980b

SHA256
735b398be4765d455c5a54da6f6ed6dbabecbe078c01c7db9e28d8eed85286c8

SHA512
caf7fcc72468ad01e554b81e3fab4d54cc8224f922a91597c1b78edb715986e87d44b3dd6b65447cb02d87ba576121fac923c019ba500544a5143b1ebe17eca7

Download Submit
memory/1036-145-0x0000000000730000-0x000000000078A000-memory.dmp

Filesize
360KB

Download
memory/1036-148-0x00000000014E0000-0x000000000156F000-memory.dmp

Filesize
572KB

Download
memory/1036-147-0x0000000000E00000-0x0000000000E2D000-memory.dmp

Filesize
180KB

Download
memory/1036-146-0x00000000016B0000-0x00000000019FA000-memory.dmp

Filesize
3.3MB

Download
memory/1204-142-0x0000000007A80000-0x0000000007B7F000-memory.dmp

Filesize
1020KB

Download
memory/1204-149-0x0000000008260000-0x0000000008366000-memory.dmp

Filesize
1.0MB

Download
memory/1204-150-0x0000000008260000-0x0000000008366000-memory.dmp

Filesize
1.0MB

Download
memory/4660-144-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4660-141-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/4660-140-0x00000000017E0000-0x0000000001B2A000-memory.dmp

Filesize
3.3MB

Download
memory/4660-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download