dcrat | e0abb4fa147097a4fb1758ed20b7d1a54f020d0de2d8144a2beaec404acb4d4c

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/04/2024, 04:25

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General

Target
b1c1d5a5a79f7dcc878b3648a0bcb0c6.exe
Size 2.1MB
Sample240407-e1yg1sdd83
SHA256 e0abb4fa147097a4fb1758ed20b7d1a54f020d0de2d8144a2beaec404acb4d4c
MD5 b1c1d5a5a79f7dcc878b3648a0bcb0c6
SHA1 595a5c2d50e0675fb2a35f8f01aec12c3bb03b3b
SHA512 7dec4fb9f50f8bb62dc6481ccc733db5fe18d1db74411890cae7b88ce597557e75f445be2f097f5e601a78c4bf5fc0eafb56e30415d0b4c014c78ad66719db2e
SSDEEP 49152:lS5Y0dPfBBpa1O/VZjTfcy2tyEGc0ng/5nH+VO7O0G:lSJBqU/HDctyJc0gZG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

dcrat infostealer rat

Malware Config

Signatures

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

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/files/0x000a0000000231c0-5.dat	dcrat
behavioral2/files/0x00070000000231cc-44.dat	dcrat
behavioral2/memory/3836-46-0x0000000000080000-0x000000000027E000-memory.dmp	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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	b1c1d5a5a79f7dcc878b3648a0bcb0c6.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	ratizounfhoisef.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
3320	ratizounfhoisef.exe
3836	ProviderDriverNet.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b1c1d5a5a79f7dcc878b3648a0bcb0c6.exe
Key created	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000_Classes\Local Settings	ratizounfhoisef.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3836	ProviderDriverNet.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 3320	1248	b1c1d5a5a79f7dcc878b3648a0bcb0c6.exe	88
PID 1248 wrote to memory of 3320	1248	b1c1d5a5a79f7dcc878b3648a0bcb0c6.exe	88
PID 1248 wrote to memory of 3320	1248	b1c1d5a5a79f7dcc878b3648a0bcb0c6.exe	88
PID 3320 wrote to memory of 2396	3320	ratizounfhoisef.exe	89
PID 3320 wrote to memory of 2396	3320	ratizounfhoisef.exe	89
PID 3320 wrote to memory of 2396	3320	ratizounfhoisef.exe	89
PID 2396 wrote to memory of 3476	2396	WScript.exe	90
PID 2396 wrote to memory of 3476	2396	WScript.exe	90
PID 2396 wrote to memory of 3476	2396	WScript.exe	90
PID 3476 wrote to memory of 3836	3476	cmd.exe	92
PID 3476 wrote to memory of 3836	3476	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\b1c1d5a5a79f7dcc878b3648a0bcb0c6.exe
"C:\Users\Admin\AppData\Local\Temp\b1c1d5a5a79f7dcc878b3648a0bcb0c6.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Users\Admin\AppData\Local\Temp\ratizounfhoisef.exe
  "C:\Users\Admin\AppData\Local\Temp\ratizounfhoisef.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3320
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\portNet\JK6gmGek8xn8B6fPCdEqzuaHCz.vbe"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:2396
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\portNet\nzntA15YgkXXFuJk3IQ0EB2k.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3476
    - - C:\Users\Admin\AppData\Roaming\portNet\ProviderDriverNet.exe
        
        "C:\Users\Admin\AppData\Roaming\portNet\ProviderDriverNet.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:3836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

ratizounfhoisef.exe

Path C:\Users\Admin\AppData\Local\Temp\ratizounfhoisef.exe
Size 2.3MB
SHA256 021ca333c6137d92a4025679a5f8c8b6b2148495ea7371fc9d6d0f348355d10e
MD5 4155eb05cc309e3f643955a5636178c2
SHA1 1e159edb3122bfcaec3b177b296c416b97234056
SHA512 f5496e5e4b8bf588f6f444a20cae0c992da63ba3b13087c87d295e752ad18f2be5e216625e9f1bc0dcbf753bcd3466992a50d1311f932596a4e86b8765cba7b0
SSDEEP 49152:UbA30YwZ/Pps1z2gdYJqAfDg207fqugwmnir4:Ubn/BqNc7U7Ewmnir4
MD5 SHA1 SHA512 SSDEEP

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JK6gmGek8xn8B6fPCdEqzuaHCz.vbe

Path C:\Users\Admin\AppData\Roaming\portNet\JK6gmGek8xn8B6fPCdEqzuaHCz.vbe
Size 215B
SHA256 7c5dd2721278be79e64b0c7cdb9714823e61c938075af4d492db6c6773271c9d
MD5 e974db8ca6cd3b24f087f9f2ea714a8f
SHA1 862aaa7e946edeb4dac34b35d62d4b83e97c40b4
SHA512 fc4c801ce73e60deafdb9677f68c414d05f3342174e2a88b49dc0aa2c883c37ba93df750f01a81c2df78f036f54bdee586a529c963ef1f9bd464420d039138ef
MD5 SHA1 SHA512

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ProviderDriverNet.exe

Path C:\Users\Admin\AppData\Roaming\portNet\ProviderDriverNet.exe
Size 2.0MB
SHA256 c6b76b9fba7b0694024473fdc37b6da8da9b83aff25c621eac0eaf1f57c6cecc
MD5 f3388d36878f3802e6976c16c018e32c
SHA1 0b97d3ba7a0385b79a02d9939595b1e3b008f68f
SHA512 4bb41942437c5c824d0f0de798e2bce545afc8587bc71178446ff37e60f3dc87a809b998f5562dbe79cd62e6e477702c50f192d59665e861fe1816f8d1b1b703
SSDEEP 24576:eBwZkBDGR18TaW4maf1lsEmzl0x5gdYegU3AfDg2rIHbluUqYdgw+BAYniPj+s:qwZ/Pps1z2gdYJqAfDg207fqugwmnir
MD5 SHA1 SHA512 SSDEEP

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nzntA15YgkXXFuJk3IQ0EB2k.bat

Path C:\Users\Admin\AppData\Roaming\portNet\nzntA15YgkXXFuJk3IQ0EB2k.bat
Size 41B
SHA256 56315ea91a708e97b384aacf8aad9da6169f22457045a956eca100cbe406cb10
MD5 ca5879e4efac874c180ff79fd5e12e50
SHA1 6fbf6a447bf2859bcfcd37b9dc4b5c6034dd9a62
SHA512 48cb042a3e0dade7d23f8f9f6b9909f087c9fe4f6634c3ad07288ad9dd9ca7c35364aa8c69bb96ad9c120170ab5439765d3b1e95614a3ac25daf9d7fb2f1d5eb
MD5 SHA1 SHA512

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memory/1248-0-0x0000000000400000-0x0000000000617000-memory.dmp

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memory/3836-46-0x0000000000080000-0x000000000027E000-memory.dmp

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memory/3836-47-0x00007FFCF1730000-0x00007FFCF21F1000-memory.dmp

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memory/3836-48-0x000000001B0C0000-0x000000001B0D0000-memory.dmp

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memory/3836-49-0x0000000002370000-0x000000000237E000-memory.dmp

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memory/3836-51-0x00007FFCF1730000-0x00007FFCF21F1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads