dcrat | 0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01

Analysis

max time kernel
121s
max time network
150s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 15:52

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General

Target

fhjsfryjaspyjga.exe
Size

560KB
MD5

37cb065f052d8cf6a46d41d6225b9a9f
SHA1

ffcd01452c4b695f1371787a5c728c692283fca2
SHA256

0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01
SHA512

8a2850f61af22a40ebb1e11c1d294cd74c94cf3b365619a4588bfbc54362575467cff4a5d75f685354b073453ad9892125739e78468a8dc550e52ccab88df47e
SSDEEP

6144:s/9Sb1sKhV/+NZCwUW/mulaEqLhEWRzSyAZW9z9mXbj7Gvvai33Ew8X6Asz6UrZ:sFK1DH/p8l/zWRdP5mfA33EjKf6UrZ

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 family
dcrat

DCRat payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2568-1-0x00000000011B0000-0x0000000001242000-memory.dmp	family_dcrat_v2
behavioral1/files/0x000a00000001202c-13.dat	family_dcrat_v2
behavioral1/memory/2096-15-0x0000000001390000-0x0000000001422000-memory.dmp	family_dcrat_v2

Executes dropped EXE 1 IoCs

pid	Process
2096	staticfile.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2096	staticfile.exe
2096	staticfile.exe
2096	staticfile.exe
2096	staticfile.exe
2096	staticfile.exe
2096	staticfile.exe
2096	staticfile.exe
2096	staticfile.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2568	fhjsfryjaspyjga.exe
Token: SeDebugPrivilege	2096	staticfile.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 1488	2568	fhjsfryjaspyjga.exe	30
PID 2568 wrote to memory of 1488	2568	fhjsfryjaspyjga.exe	30
PID 2568 wrote to memory of 1488	2568	fhjsfryjaspyjga.exe	30
PID 1488 wrote to memory of 2340	1488	cmd.exe	32
PID 1488 wrote to memory of 2340	1488	cmd.exe	32
PID 1488 wrote to memory of 2340	1488	cmd.exe	32
PID 1488 wrote to memory of 1248	1488	cmd.exe	33
PID 1488 wrote to memory of 1248	1488	cmd.exe	33
PID 1488 wrote to memory of 1248	1488	cmd.exe	33
PID 1488 wrote to memory of 2096	1488	cmd.exe	34
PID 1488 wrote to memory of 2096	1488	cmd.exe	34
PID 1488 wrote to memory of 2096	1488	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\fhjsfryjaspyjga.exe
"C:\Users\Admin\AppData\Local\Temp\fhjsfryjaspyjga.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Ou3QW9QrCl.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1488
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2340
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:1248
- - C:\Users\Admin\AppData\Local\staticfile.exe
    "C:\Users\Admin\AppData\Local\staticfile.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Ou3QW9QrCl.bat

Filesize
219B

MD5
5efdac25fb16ea2ac822958e65f22d1e

SHA1
1d563c47fb85afd5840d3f47a99a72bd0a1b992f

SHA256
92bd29e433e7f2241f7877051754e823f84b8681a8e0bb0ab70a8dfcb5faddea

SHA512
88abc3d04027b78debcc29e465e3b9eb913b8b0e0454db8c3179c8eafb1e99a18d0bc0d79905e76fd9e2af0706a07c338ce0968f2ad6ae73a0ae08adbb98ef02

Download Submit
C:\Users\Admin\AppData\Local\staticfile.exe

Filesize
560KB

MD5
37cb065f052d8cf6a46d41d6225b9a9f

SHA1
ffcd01452c4b695f1371787a5c728c692283fca2

SHA256
0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01

SHA512
8a2850f61af22a40ebb1e11c1d294cd74c94cf3b365619a4588bfbc54362575467cff4a5d75f685354b073453ad9892125739e78468a8dc550e52ccab88df47e

Download Submit
memory/2096-15-0x0000000001390000-0x0000000001422000-memory.dmp

Filesize
584KB

Download
memory/2568-0-0x000007FEF5103000-0x000007FEF5104000-memory.dmp

Filesize
4KB

Download
memory/2568-1-0x00000000011B0000-0x0000000001242000-memory.dmp

Filesize
584KB

Download
memory/2568-2-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp

Filesize
9.9MB

Download
memory/2568-3-0x0000000000150000-0x000000000015E000-memory.dmp

Filesize
56KB

Download
memory/2568-4-0x0000000000260000-0x000000000026C000-memory.dmp

Filesize
48KB

Download
memory/2568-12-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp

Filesize
9.9MB

Download