dcrat | 68ac85a4ee781274cf51cb11e59f650606507af297108bb2938bc18f3b6a5bce

Analysis

max time kernel
61s
max time network
64s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-01-2025 04:35

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General

Target

Nursultan Alpha.exe
Size

3.8MB
MD5

eb9f6fb7804c8c8dbd3ebb1d355fa173
SHA1

1a37eaa4e337486684f104578fd6bda83bbecd90
SHA256

8a67da8e48b02c1e2b697629fe80e2de89a8eabee46778b3d1c461a14848142d
SHA512

e94a0664474caa4b9a964b6cb83b9623ae2fe628b61ead3c90364e4168969884da4dd93340c96b48e49237a5b3748d4c881bcce7e299367e6a8f66408c8dded4
SSDEEP

98304:yX1GibnDr0kTmDBN68MiXWF21fGotJfqf+5Ybux:y1GibnkkTW68MATfGVf+5o4

Score

10^/10

dcrat discovery infostealer rat spyware stealer

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Nursultan Alpha.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	shvhost.exe

Executes dropped EXE 2 IoCs

pid	Process
4428	shvhost.exe
216	shvhost.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
25	ipinfo.io
26	ipinfo.io
48	ipinfo.io
49	ipinfo.io

Drops file in Program Files directory 7 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Security\BrowserCore\en-US\dllhost.exe	shvhost.exe
File created	C:\Program Files\Windows Security\BrowserCore\en-US\5940a34987c991	shvhost.exe
File created	C:\Program Files (x86)\Internet Explorer\de-DE\conhost.exe	shvhost.exe
File opened for modification	C:\Program Files (x86)\Internet Explorer\de-DE\conhost.exe	shvhost.exe
File created	C:\Program Files (x86)\Internet Explorer\de-DE\088424020bedd6	shvhost.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\smss.exe	shvhost.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\69ddcba757bf72	shvhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\IME\sppsvc.exe	shvhost.exe
File created	C:\Windows\IME\0a1fd5f707cd16	shvhost.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	Nursultan Alpha.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	Nursultan Alpha.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	shvhost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe
4428	shvhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4428	shvhost.exe
Token: SeDebugPrivilege	216	shvhost.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 428	3576	Nursultan Alpha.exe	84
PID 3576 wrote to memory of 428	3576	Nursultan Alpha.exe	84
PID 3576 wrote to memory of 428	3576	Nursultan Alpha.exe	84
PID 428 wrote to memory of 2308	428	WScript.exe	98
PID 428 wrote to memory of 2308	428	WScript.exe	98
PID 428 wrote to memory of 2308	428	WScript.exe	98
PID 2308 wrote to memory of 4428	2308	cmd.exe	100
PID 2308 wrote to memory of 4428	2308	cmd.exe	100
PID 4428 wrote to memory of 4148	4428	shvhost.exe	102
PID 4428 wrote to memory of 4148	4428	shvhost.exe	102
PID 4148 wrote to memory of 4276	4148	cmd.exe	104
PID 4148 wrote to memory of 4276	4148	cmd.exe	104
PID 4148 wrote to memory of 4920	4148	cmd.exe	105
PID 4148 wrote to memory of 4920	4148	cmd.exe	105
PID 4148 wrote to memory of 216	4148	cmd.exe	107
PID 4148 wrote to memory of 216	4148	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\Nursultan Alpha.exe
"C:\Users\Admin\AppData\Local\Temp\Nursultan Alpha.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3576
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\c\j0rb9X1I2m1oleoOgwnJO7znjk9sCQMFXvhfZcscNZxn61N13golWBWN.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:428
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\c\RWyyAE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2308
  - - C:\c\shvhost.exe
      "C:\/c/shvhost.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Drops file in Program Files directory
      Drops file in Windows directory
      Modifies registry class
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4428
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\MrfUPDYpIx.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4148
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:4276
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:4920
      - C:\c\shvhost.exe
        
        "C:\c\shvhost.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1KB

MD5
89cb79e1d42f837d7920fbf17b8403e0

SHA1
ae1ef657b25a868f74bf150900af98baeb25ed4c

SHA256
6a62db318eea0009f0b53380a597ddffdb8203f242515b7b44900d19a8ca9c1f

SHA512
91fd649034b5a2c678eb412f1a7a2a88f9e065e8f6d3451376f986bc5d6aa96190fd5b94c968fcd1ddd975f289fc692423aa02a0b14cb53ecbb73b8923bb9502

Download Submit
C:\Users\Admin\AppData\Local\Temp\MrfUPDYpIx.bat

Filesize
192B

MD5
0233ec8f3300bbc9d08ec59b1077ae4c

SHA1
630ae8854f908b456da460193675175a2992b1b1

SHA256
16cda85dc09af9ecb8710f227e8f7b3abc312ab9ad7512a5c7140be21f4a88b8

SHA512
ea7591b3c55395ae51c339b8a4e55af578b1c49a0a7d2efc9a360c1f609f69e66a097f5b1a872a4dc170c1c1f84f309d58ffc733c0187f31a64e4b9085638457

Download Submit
C:\c\RWyyAE.bat

Filesize
80B

MD5
eb42e2ec27edbdf9cce20783e0c2f979

SHA1
a36d55a0a0920852f7f583172a2dc16e3efbf1ff

SHA256
8e77d1eba5650474ed6c0b5aa86baaeac4b1adca852dc89db67f36886b108108

SHA512
73e61da6a2090b9100a5f335d76308e33844c28ce930d538c01692022666edbfa0538e715e3ff6644e35ec7f45d35fe957653c7e828d50c9ef1ff390ee3b4cf7

Download Submit
C:\c\j0rb9X1I2m1oleoOgwnJO7znjk9sCQMFXvhfZcscNZxn61N13golWBWN.vbe

Filesize
198B

MD5
b3d9fbae9b41bbf170e950d813bb8db1

SHA1
534551e402cdd865417c42ab591d1806aec9e73f

SHA256
c3c2429bd95c15775a3a3d611a5e9eb9276d6223395fbefe47978d4250afa019

SHA512
169fec8b816e8a01ce09eeb7939631d88ab4e7953f2beb06087c9bcc157984f4fd20b0de3702054fb832fd1d4dfe82b7fee112da1b94247c1cddbeb73a97f43f

Download Submit
C:\c\shvhost.exe

Filesize
3.5MB

MD5
31e600a210957ad4eb0937897528c65c

SHA1
15a576fe4341a9dabedae06e6677cc3006eec306

SHA256
b19bf50129f50187e68591c6623aaaeef088fbda19d5e684b867e68e7bf5dfc3

SHA512
682f9797a6aecb1171d10dc02f87f6d300c2948d6a519dbcc9f262ec1fef91d8ae2175cb108a871cf59edb34abe403f75600405332a4b47bc18c266c1ac3abf7

Download Submit
memory/4428-32-0x000000001C760000-0x000000001C772000-memory.dmp

Filesize
72KB

Download
memory/4428-40-0x000000001C780000-0x000000001C790000-memory.dmp

Filesize
64KB

Download
memory/4428-19-0x000000001B330000-0x000000001B34C000-memory.dmp

Filesize
112KB

Download
memory/4428-20-0x000000001C790000-0x000000001C7E0000-memory.dmp

Filesize
320KB

Download
memory/4428-22-0x000000001B180000-0x000000001B190000-memory.dmp

Filesize
64KB

Download
memory/4428-24-0x000000001B350000-0x000000001B368000-memory.dmp

Filesize
96KB

Download
memory/4428-26-0x000000001B190000-0x000000001B1A0000-memory.dmp

Filesize
64KB

Download
memory/4428-28-0x000000001B1A0000-0x000000001B1B0000-memory.dmp

Filesize
64KB

Download
memory/4428-30-0x000000001B370000-0x000000001B37E000-memory.dmp

Filesize
56KB

Download
memory/4428-15-0x000000001B300000-0x000000001B326000-memory.dmp

Filesize
152KB

Download
memory/4428-34-0x000000001C740000-0x000000001C750000-memory.dmp

Filesize
64KB

Download
memory/4428-36-0x000000001C800000-0x000000001C816000-memory.dmp

Filesize
88KB

Download
memory/4428-38-0x000000001C750000-0x000000001C75E000-memory.dmp

Filesize
56KB

Download
memory/4428-17-0x000000001B170000-0x000000001B17E000-memory.dmp

Filesize
56KB

Download
memory/4428-42-0x000000001C7E0000-0x000000001C7F0000-memory.dmp

Filesize
64KB

Download
memory/4428-44-0x000000001C880000-0x000000001C8DA000-memory.dmp

Filesize
360KB

Download
memory/4428-46-0x000000001C7F0000-0x000000001C7FE000-memory.dmp

Filesize
56KB

Download
memory/4428-48-0x000000001C820000-0x000000001C830000-memory.dmp

Filesize
64KB

Download
memory/4428-50-0x000000001C830000-0x000000001C83E000-memory.dmp

Filesize
56KB

Download
memory/4428-52-0x000000001C840000-0x000000001C848000-memory.dmp

Filesize
32KB

Download
memory/4428-54-0x000000001C8E0000-0x000000001C8F8000-memory.dmp

Filesize
96KB

Download
memory/4428-56-0x000000001C850000-0x000000001C85C000-memory.dmp

Filesize
48KB

Download
memory/4428-58-0x000000001C950000-0x000000001C99E000-memory.dmp

Filesize
312KB

Download
memory/4428-13-0x0000000000240000-0x00000000005C0000-memory.dmp

Filesize
3.5MB

Download
memory/4428-12-0x00007FFFA51D3000-0x00007FFFA51D5000-memory.dmp

Filesize
8KB

Download