dcrat | 1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e

General

Target

1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe
Size

828KB
MD5

0b59760b00daf4fc87ef9e87ba43682d
SHA1

8f441c65cc64c45792568d32042d5c3481821147
SHA256

1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e
SHA512

0b8f3a8ab1c7407455d9633f1bcac6174e4e31904ab8e41b204b0048c7bd28eb6abcc1cde5ddd785307081e45564d342d522a31f3a16cf798645129793145bbe
SSDEEP

12288:gR7Dy9/6x+hRJu+hxVv+0+QuP8AAKvELL/1SmIfR9YNpNHHQf2:wyt6x+BdG0+QsvELxSHzYlnJ

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

Process spawned unexpected child process 12 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2552	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2840	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2092	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2684	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2544	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2564	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2604	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2992	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1524	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1796	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3008	2704	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1804	2704	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2372-1-0x0000000000370000-0x0000000000446000-memory.dmp	dcrat
behavioral1/files/0x0007000000016c62-17.dat	dcrat
behavioral1/memory/2192-19-0x0000000000E90000-0x0000000000F66000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2192	services.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files\Java\lsass.exe	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe
File created	C:\Program Files\Java\6203df4a6bafc7	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A90000000001}\sppsvc.exe	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A90000000001}\0a1fd5f707cd16	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 12 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2840	schtasks.exe
2092	schtasks.exe
2684	schtasks.exe
2544	schtasks.exe
2604	schtasks.exe
2992	schtasks.exe
1524	schtasks.exe
2552	schtasks.exe
1796	schtasks.exe
3008	schtasks.exe
1804	schtasks.exe
2564	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2372	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe
2192	services.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe
Token: SeDebugPrivilege	2192	services.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2828	2372	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe	43
PID 2372 wrote to memory of 2828	2372	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe	43
PID 2372 wrote to memory of 2828	2372	1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe	43
PID 2828 wrote to memory of 2932	2828	cmd.exe	45
PID 2828 wrote to memory of 2932	2828	cmd.exe	45
PID 2828 wrote to memory of 2932	2828	cmd.exe	45
PID 2828 wrote to memory of 2192	2828	cmd.exe	46
PID 2828 wrote to memory of 2192	2828	cmd.exe	46
PID 2828 wrote to memory of 2192	2828	cmd.exe	46

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe
"C:\Users\Admin\AppData\Local\Temp\1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\viRWoNPurg.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2932
- - C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\services.exe
    "C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\services.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2192

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\Default User\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2092

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Program Files\Java\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2684

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files\Java\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2544

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Program Files\Java\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2564

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 7 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2992

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1524

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A90000000001}\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A90000000001}\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3008

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A90000000001}\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\services.exe

Filesize
828KB

MD5
0b59760b00daf4fc87ef9e87ba43682d

SHA1
8f441c65cc64c45792568d32042d5c3481821147

SHA256
1d807f0c23384297333d3765556e891a0c25416ecb0eded242582896fa99290e

SHA512
0b8f3a8ab1c7407455d9633f1bcac6174e4e31904ab8e41b204b0048c7bd28eb6abcc1cde5ddd785307081e45564d342d522a31f3a16cf798645129793145bbe

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

Filesize
226B

MD5
0e1d9da50c8730a8c39c7e3345dffef8

SHA1
f36959022a41db3b14199c1f12f2c0e2f4d85145

SHA256
ecea3171bf8ad9c675acbda118a7cf23c9d9ed7eb7fdf858316b30dae19e5f87

SHA512
6fcba5d18044e31489bf7230b40d642453d808d63b4e2c8ce6b731010c78564a16e971d10fd3b3345b9c476d6ff533adf5d6c00238d4aa2fc99ed73551bd92a7

Download Submit
memory/2192-19-0x0000000000E90000-0x0000000000F66000-memory.dmp

Filesize
856KB

Download
memory/2372-0-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download
memory/2372-1-0x0000000000370000-0x0000000000446000-memory.dmp

Filesize
856KB

Download
memory/2372-2-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2372-16-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads