dcrat | 62f1d4e331c6eaa835a1b1cd59244a6b064f0dfe8b97f07ec51336b6258a1eba

General

Target

a8331e50e85849f47d59f1d1f14fd78e.bin.exe
Size

1.1MB
MD5

a8331e50e85849f47d59f1d1f14fd78e
SHA1

709f5b95b0b51079f6b9374a30e0a2319ee2cfa3
SHA256

62f1d4e331c6eaa835a1b1cd59244a6b064f0dfe8b97f07ec51336b6258a1eba
SHA512

c42d6abc7108c2d50bf1f7b272f3c5cff9a5a8134db9fd3a871aab48fd12b74521780b734db1224a6953d4ad0be14dc1e4b0de9a00a6bd1ba8da350e2bdf54e3
SSDEEP

24576:Uo53R8dBoeZfWoXzNOraLyMkKH/5KOguyRs6CE3jLMpppdpppppUO9Rs6CE3jLMt:55CbTf/BEaLyv8YuyRs6CE3jLbO9Rs6I

Score

10^/10

dcrat 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 payload 5 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2964-63-0x0000000000400000-0x00000000004DA000-memory.dmp	dcrat
behavioral1/memory/2964-65-0x0000000000400000-0x00000000004DA000-memory.dmp	dcrat
behavioral1/memory/2964-69-0x0000000000400000-0x00000000004DA000-memory.dmp	dcrat
behavioral1/memory/2964-71-0x0000000000400000-0x00000000004DA000-memory.dmp	dcrat
behavioral1/memory/2964-74-0x0000000000400000-0x00000000004DA000-memory.dmp	dcrat

Reads user/profile data of web browsers 2 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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1188 set thread context of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe
2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2964	a8331e50e85849f47d59f1d1f14fd78e.bin.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30
PID 1188 wrote to memory of 2964	1188	a8331e50e85849f47d59f1d1f14fd78e.bin.exe	30

C:\Users\Admin\AppData\Local\Temp\a8331e50e85849f47d59f1d1f14fd78e.bin.exe
"C:\Users\Admin\AppData\Local\Temp\a8331e50e85849f47d59f1d1f14fd78e.bin.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Users\Admin\AppData\Local\Temp\a8331e50e85849f47d59f1d1f14fd78e.bin.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1188-54-0x0000000000A80000-0x0000000000BAA000-memory.dmp

Filesize
1.2MB

Download
memory/1188-55-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/1188-56-0x00000000006C0000-0x0000000000700000-memory.dmp

Filesize
256KB

Download
memory/1188-57-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/1188-58-0x00000000002E0000-0x00000000002F4000-memory.dmp

Filesize
80KB

Download
memory/1188-59-0x00000000054B0000-0x0000000005584000-memory.dmp

Filesize
848KB

Download
memory/1188-60-0x0000000005A40000-0x0000000005B1C000-memory.dmp

Filesize
880KB

Download
memory/1188-73-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/2964-69-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download
memory/2964-76-0x0000000004A10000-0x0000000004A50000-memory.dmp

Filesize
256KB

Download
memory/2964-65-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download
memory/2964-67-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2964-62-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download
memory/2964-71-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download
memory/2964-74-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download
memory/2964-61-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download
memory/2964-75-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download
memory/2964-63-0x0000000000400000-0x00000000004DA000-memory.dmp

Filesize
872KB

Download
memory/2964-77-0x0000000000670000-0x000000000068C000-memory.dmp

Filesize
112KB

Download
memory/2964-78-0x00000000008B0000-0x00000000008C6000-memory.dmp

Filesize
88KB

Download
memory/2964-79-0x00000000009E0000-0x00000000009F0000-memory.dmp

Filesize
64KB

Download
memory/2964-80-0x0000000000A50000-0x0000000000A5C000-memory.dmp

Filesize
48KB

Download
memory/2964-81-0x0000000000A60000-0x0000000000A6E000-memory.dmp

Filesize
56KB

Download
memory/2964-82-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download
memory/2964-83-0x0000000004A10000-0x0000000004A50000-memory.dmp

Filesize
256KB

Download

Analysis

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