dcrat | 0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01

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 discovery 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/2668-1-0x0000000000C00000-0x0000000000C92000-memory.dmp	family_dcrat_v2
behavioral1/files/0x000b000000012263-13.dat	family_dcrat_v2
behavioral1/memory/2864-15-0x0000000001350000-0x00000000013E2000-memory.dmp	family_dcrat_v2

Executes dropped EXE 1 IoCs

pid	Process
2864	staticfile.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2676	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2676	PING.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2864	staticfile.exe
2864	staticfile.exe
2864	staticfile.exe
2864	staticfile.exe
2864	staticfile.exe
2864	staticfile.exe
2864	staticfile.exe
2864	staticfile.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	fhjsfryjaspyjga.exe
Token: SeDebugPrivilege	2864	staticfile.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2252	2668	fhjsfryjaspyjga.exe	31
PID 2668 wrote to memory of 2252	2668	fhjsfryjaspyjga.exe	31
PID 2668 wrote to memory of 2252	2668	fhjsfryjaspyjga.exe	31
PID 2252 wrote to memory of 2900	2252	cmd.exe	33
PID 2252 wrote to memory of 2900	2252	cmd.exe	33
PID 2252 wrote to memory of 2900	2252	cmd.exe	33
PID 2252 wrote to memory of 2676	2252	cmd.exe	34
PID 2252 wrote to memory of 2676	2252	cmd.exe	34
PID 2252 wrote to memory of 2676	2252	cmd.exe	34
PID 2252 wrote to memory of 2864	2252	cmd.exe	35
PID 2252 wrote to memory of 2864	2252	cmd.exe	35
PID 2252 wrote to memory of 2864	2252	cmd.exe	35

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:2668
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Owqm65YvbK.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2252
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2900
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2676
- - 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:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Owqm65YvbK.bat

Filesize
171B

MD5
ee20abe33d756b77f87b96da27b16cd6

SHA1
a7b7acfe012197af9c8d36343f75628a389925a5

SHA256
3d33d2bd137eef08219bd82aaf2f12994a75d901bd51886f26e2dd9cd67efe4b

SHA512
e4687b5f2114b8fa3d04475ad95db69e75d9717f0e4599b391822bb4d39c215fb385a3359806213ec5841c372564531d1b179a249deef21480325f539be21bda

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

Filesize
560KB

MD5
37cb065f052d8cf6a46d41d6225b9a9f

SHA1
ffcd01452c4b695f1371787a5c728c692283fca2

SHA256
0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01

SHA512
8a2850f61af22a40ebb1e11c1d294cd74c94cf3b365619a4588bfbc54362575467cff4a5d75f685354b073453ad9892125739e78468a8dc550e52ccab88df47e

Download Submit
memory/2668-0-0x000007FEF58D3000-0x000007FEF58D4000-memory.dmp

Filesize
4KB

Download
memory/2668-1-0x0000000000C00000-0x0000000000C92000-memory.dmp

Filesize
584KB

Download
memory/2668-2-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp

Filesize
9.9MB

Download
memory/2668-3-0x0000000000980000-0x000000000098E000-memory.dmp

Filesize
56KB

Download
memory/2668-4-0x0000000000990000-0x000000000099C000-memory.dmp

Filesize
48KB

Download
memory/2668-12-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp

Filesize
9.9MB

Download
memory/2864-15-0x0000000001350000-0x00000000013E2000-memory.dmp

Filesize
584KB

Download

Analysis

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