gurcu | 56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260

Analysis

max time kernel
125s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24-09-2024 21:12

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General

Target

56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe
Size

7.0MB
MD5

f52edee9472d973f7aedaa58baed96e6
SHA1

dee4734806f0a47e81627a66b2c75e5ec37b6b1a
SHA256

56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260
SHA512

1568f66ea43208900e1800ac59946f92d426d05d00783decdce31eb088ec54cd467adf640e5b2a5388f5ee6ccd2840dfe551f9ae18c06b168a469ec18a85ef0b
SSDEEP

98304:bmurSHFk4vh9IWa/LP3Nm9Zlxne1uxetbDEgovbddnY6Jy3yH/O:b6m7P3Nm9ZWiADEp5F0R

Score

10^/10

gurcu xworm discovery execution rat stealer trojan

Malware Config

Extracted

Family

xworm

146.190.110.91:3389

Attributes

Install_directory
%AppData%
install_file
svchost.exe
telegram
https://api.telegram.org/bot7023899363:AAFEzgbfWzhyE32Lf95TKSRYEYXMd4AfMyk/sendMessage?chat_id=6354844663

Extracted

Family

gurcu

https://api.telegram.org/bot7023899363:AAFEzgbfWzhyE32Lf95TKSRYEYXMd4AfMyk/sendMessage?chat_id=6354844663

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4352-26-0x0000000000DB0000-0x0000000000DC6000-memory.dmp	family_xworm
behavioral2/files/0x000700000002359f-25.dat	family_xworm

Gurcu, WhiteSnake
Gurcu is a malware stealer written in C#.
stealer gurcu
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3484	powershell.exe
4532	powershell.exe
3412	powershell.exe
2272	powershell.exe
4772	powershell.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	msedgewebview2.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\msedgewebview2.exe.lnk	msedgewebview2.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
1748	Luxury Crypter.exe
4352	svchost.exe
3544	msedgewebview2.exe
4148	msedgewebview2.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2284	1748	WerFault.exe	89

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Luxury Crypter.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3624	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
400	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4352	svchost.exe
4148	msedgewebview2.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
3484	powershell.exe
3484	powershell.exe
3484	powershell.exe
4532	powershell.exe
4532	powershell.exe
4532	powershell.exe
3412	powershell.exe
3412	powershell.exe
3412	powershell.exe
2272	powershell.exe
2272	powershell.exe
2272	powershell.exe
4352	svchost.exe
4352	svchost.exe
4772	powershell.exe
4772	powershell.exe
4772	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4352	svchost.exe
Token: SeDebugPrivilege	3484	powershell.exe
Token: SeDebugPrivilege	4532	powershell.exe
Token: SeDebugPrivilege	3412	powershell.exe
Token: SeDebugPrivilege	2272	powershell.exe
Token: SeDebugPrivilege	4352	svchost.exe
Token: SeDebugPrivilege	3544	msedgewebview2.exe
Token: SeDebugPrivilege	4772	powershell.exe
Token: SeDebugPrivilege	4148	msedgewebview2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4352	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3820 wrote to memory of 1748	3820	56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe	89
PID 3820 wrote to memory of 1748	3820	56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe	89
PID 3820 wrote to memory of 1748	3820	56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe	89
PID 3820 wrote to memory of 4352	3820	56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe	90
PID 3820 wrote to memory of 4352	3820	56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe	90
PID 4352 wrote to memory of 3484	4352	svchost.exe	97
PID 4352 wrote to memory of 3484	4352	svchost.exe	97
PID 4352 wrote to memory of 4532	4352	svchost.exe	99
PID 4352 wrote to memory of 4532	4352	svchost.exe	99
PID 4352 wrote to memory of 3412	4352	svchost.exe	103
PID 4352 wrote to memory of 3412	4352	svchost.exe	103
PID 4352 wrote to memory of 2272	4352	svchost.exe	105
PID 4352 wrote to memory of 2272	4352	svchost.exe	105
PID 3820 wrote to memory of 3544	3820	56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe	107
PID 3820 wrote to memory of 3544	3820	56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe	107
PID 3544 wrote to memory of 400	3544	msedgewebview2.exe	111
PID 3544 wrote to memory of 400	3544	msedgewebview2.exe	111
PID 3544 wrote to memory of 4772	3544	msedgewebview2.exe	112
PID 3544 wrote to memory of 4772	3544	msedgewebview2.exe	112
PID 3544 wrote to memory of 4148	3544	msedgewebview2.exe	115
PID 3544 wrote to memory of 4148	3544	msedgewebview2.exe	115
PID 3544 wrote to memory of 2448	3544	msedgewebview2.exe	116
PID 3544 wrote to memory of 2448	3544	msedgewebview2.exe	116

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe
"C:\Users\Admin\AppData\Local\Temp\56747e2199faa9d6a532d07432f7f784f1ab773bfbae4bc2c4384574c035a260.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3820
- C:\Users\Admin\AppData\Local\Temp\Luxury Crypter.exe
  "C:\Users\Admin\AppData\Local\Temp\Luxury Crypter.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1748
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1748 -s 780
    3⤵
    - Program crash
    PID:2284
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4352
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3484
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4532
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3412
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2272
- C:\ProgramData\msedgewebview2.exe
  "C:\ProgramData\msedgewebview2.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3544
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks.exe" /create /tn msedgewebview2 /tr "C:\Users\Admin\AppData\Local\ACCApi\msedgewebview2.exe" /st 21:17 /du 23:59 /sc daily /ri 1 /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:400
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\ACCApi'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4772
- - C:\Users\Admin\AppData\Local\ACCApi\msedgewebview2.exe
    "C:\Users\Admin\AppData\Local\ACCApi\msedgewebview2.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of AdjustPrivilegeToken
    PID:4148
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8875.tmp.cmd""
    3⤵
    PID:2448
  - - C:\Windows\system32\timeout.exe
      timeout 6
      4⤵
      Delays execution with timeout.exe
      PID:3624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1748 -ip 1748
1⤵
PID:4916

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4308,i,10065386245627775856,6567048529106473151,262144 --variations-seed-version --mojo-platform-channel-handle=4280 /prefetch:8
1⤵
PID:2888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\msedgewebview2.exe.log

Filesize
660B

MD5
1c5e1d0ff3381486370760b0f2eb656b

SHA1
f9df6be8804ef611063f1ff277e323b1215372de

SHA256
f424c891fbc7385e9826beed2dd8755aeac5495744b5de0a1e370891a7beaf7a

SHA512
78f5fc40a185d04c9e4a02a3d1b10b4bd684c579a45a0d1e8f49f8dee9018ed7bc8875cbf21f98632f93ead667214a41904226ce54817b85caeeb4b0de54a743

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
b55c6ff35916daee92d67e736a0e6411

SHA1
17d526ac0eb82d8491cf14490d0e0c4997636c4b

SHA256
bd4b0bdf4dfa57793600a1648b43b17a0d7cff75bf20875963f7ff487efc3a29

SHA512
e31a30bda087b270862f51b9063af90b3a80cf1a7fbaf18cf82a197b2cfd9609ec90aa16ae364bbff5862e1047742c9529019b5b12f71a6777116610999dc61c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
b51dc9e5ec3c97f72b4ca9488bbb4462

SHA1
5c1e8c0b728cd124edcacefb399bbd5e25b21bd3

SHA256
976f9534aa2976c85c2455bdde786a3f55d63aefdd40942eba1223c4c93590db

SHA512
0e5aa6cf64c535aefb833e5757b68e1094c87424abe2615a7d7d26b1b31eff358d12e36e75ca57fd690a9919b776600bf4c5c0e5a5df55366ba62238bdf3f280

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
cae60f0ddddac635da71bba775a2c5b4

SHA1
386f1a036af61345a7d303d45f5230e2df817477

SHA256
b2dd636b7b0d3bfe44cef5e1175828b1fa7bd84d5563f54342944156ba996c16

SHA512
28ed8a8bc132ef56971cfd7b517b17cdb74a7f8c247ef6bff232996210075e06aa58a415825a1e038cfb547ad3dc6882bf1ca1b68c5b360ef0512a1440850253

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

Filesize
8.8MB

MD5
9c55d8c0b720f652e4ad3753e9939b99

SHA1
ee69da72e65d44638f352791b2114887e2110384

SHA256
44a220f92ce2822d3d8e9c7ded429c9e53f650224759c8ec75c49706716fda77

SHA512
ea88bcf9b289ef4b2ba34f3b7818aee672867418d4e8fb29d5fac99688e30babfc21a7279151397ef47f8d852b8129ed63a42eec7e1a5bd598c744af9da320b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_algi2apt.k3b.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
67KB

MD5
39f4793e3bd69fde3059e02b84875bef

SHA1
4ae174ff10e05e7946c6220b2ef7565830596b3c

SHA256
eee698d53132459d85ad39ef66c6b33769dbf69469a346a1ea26c13eebfb4102

SHA512
4642ba370d794ffc0dac13a84f8ea3501f9a88a0d2584daecbb340b92cce1dd14c46b7d9d5f4a27a60c1365584f995aa7e93fdc70c4775425f5b3590f6eeec50

Download Submit
memory/1748-29-0x0000000074A2E000-0x0000000074A2F000-memory.dmp

Filesize
4KB

Download
memory/1748-30-0x0000000000DA0000-0x000000000167A000-memory.dmp

Filesize
8.9MB

Download
memory/3484-40-0x000002293EAF0000-0x000002293EB12000-memory.dmp

Filesize
136KB

Download
memory/3544-94-0x000002882B1A0000-0x000002882B1E2000-memory.dmp

Filesize
264KB

Download
memory/3820-0-0x00007FFAABD83000-0x00007FFAABD85000-memory.dmp

Filesize
8KB

Download
memory/3820-77-0x00007FFAABD83000-0x00007FFAABD85000-memory.dmp

Filesize
8KB

Download
memory/3820-88-0x00007FFAABD80000-0x00007FFAAC841000-memory.dmp

Filesize
10.8MB

Download
memory/3820-95-0x00007FFAABD80000-0x00007FFAAC841000-memory.dmp

Filesize
10.8MB

Download
memory/3820-4-0x00007FFAABD80000-0x00007FFAAC841000-memory.dmp

Filesize
10.8MB

Download
memory/3820-1-0x00000000001A0000-0x00000000008A8000-memory.dmp

Filesize
7.0MB

Download
memory/4352-28-0x00007FFAABD80000-0x00007FFAAC841000-memory.dmp

Filesize
10.8MB

Download
memory/4352-26-0x0000000000DB0000-0x0000000000DC6000-memory.dmp

Filesize
88KB

Download
memory/4352-89-0x00007FFAABD80000-0x00007FFAAC841000-memory.dmp

Filesize
10.8MB

Download