dcrat | 4cb5fdd185102520c29c5975190f67567eeffaa42dc3692ee0cc9595b8a07e20

Analysis

max time kernel
119s
max time network
145s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 09:06

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

99209E1F30A833E0C7654FCC0AA2C9C5.exe
Size

4.7MB
MD5

99209e1f30a833e0c7654fcc0aa2c9c5
SHA1

75ac3347aae0a9dc3520ce0d31ca6ee2c7f4bbe5
SHA256

4cb5fdd185102520c29c5975190f67567eeffaa42dc3692ee0cc9595b8a07e20
SHA512

abd6cac229ffac33e6ec887e41b041c4e02a5da1a054c474549657dfda326afbfd127c435f796d2945b0eb1d9586599936d0ddae339845dd43a91610c5baaa5b
SSDEEP

12288:egY1Cj1eUAM2X3bV+rrmDl5/NJoBh3fVFycj3eI8HnR80p0C2jGJBHAfVDS3E6t1:elMednbV+rrmlzM6AOhujGJBKKE6t1

Score

10^/10

dcrat discovery 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 family
dcrat

DCRat payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2392-1-0x00000000009E0000-0x0000000000AB4000-memory.dmp	family_dcrat_v2
behavioral1/files/0x00070000000187a8-26.dat	family_dcrat_v2
behavioral1/memory/1144-36-0x0000000000830000-0x0000000000904000-memory.dmp	family_dcrat_v2

Executes dropped EXE 1 IoCs

pid	Process
1144	dllhost.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Optional\sppsvc.exe	99209E1F30A833E0C7654FCC0AA2C9C5.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Optional\0a1fd5f707cd16	99209E1F30A833E0C7654FCC0AA2C9C5.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Font\wininit.exe	99209E1F30A833E0C7654FCC0AA2C9C5.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Font\56085415360792	99209E1F30A833E0C7654FCC0AA2C9C5.exe
File created	C:\Program Files\VideoLAN\VLC\hrtfs\dwm.exe	99209E1F30A833E0C7654FCC0AA2C9C5.exe
File created	C:\Program Files\VideoLAN\VLC\hrtfs\6cb0b6c459d5d3	99209E1F30A833E0C7654FCC0AA2C9C5.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework64\v3.0\Windows Communication Foundation\Idle.exe	99209E1F30A833E0C7654FCC0AA2C9C5.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v3.0\Windows Communication Foundation\Idle.exe	99209E1F30A833E0C7654FCC0AA2C9C5.exe
File created	C:\Windows\Microsoft.NET\Framework64\v3.0\Windows Communication Foundation\6ccacd8608530f	99209E1F30A833E0C7654FCC0AA2C9C5.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe
Token: SeDebugPrivilege	1144	dllhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1144	dllhost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 2060	2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe	30
PID 2392 wrote to memory of 2060	2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe	30
PID 2392 wrote to memory of 2060	2392	99209E1F30A833E0C7654FCC0AA2C9C5.exe	30
PID 2060 wrote to memory of 2488	2060	cmd.exe	32
PID 2060 wrote to memory of 2488	2060	cmd.exe	32
PID 2060 wrote to memory of 2488	2060	cmd.exe	32
PID 2060 wrote to memory of 824	2060	cmd.exe	33
PID 2060 wrote to memory of 824	2060	cmd.exe	33
PID 2060 wrote to memory of 824	2060	cmd.exe	33
PID 2060 wrote to memory of 1144	2060	cmd.exe	35
PID 2060 wrote to memory of 1144	2060	cmd.exe	35
PID 2060 wrote to memory of 1144	2060	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\99209E1F30A833E0C7654FCC0AA2C9C5.exe
"C:\Users\Admin\AppData\Local\Temp\99209E1F30A833E0C7654FCC0AA2C9C5.exe"
1⤵
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\aIqfdGQUUW.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2488
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:824
- - C:\Users\Default\Recent\dllhost.exe
    "C:\Users\Default\Recent\dllhost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
211B

MD5
cd23493319d229ddd139ff239391d227

SHA1
92ecc5cfb23680aeb8453f91e9815dc79c6cb8c3

SHA256
04197f262c9c8d77514419103dd0f2e33fbba9f9a8f2813b2f52c3de768e9859

SHA512
c54d2c368c41bbd60518174c7c7989a3f9f978a57fa033b05777810f357b355ee45dbc0a3a9ac1c48062da216416e8c677acaccf8605533c9e9b5fa830346123

Download Submit
C:\Users\Default\AppData\Roaming\Microsoft\Windows\Recent\dllhost.exe

Filesize
4.7MB

MD5
99209e1f30a833e0c7654fcc0aa2c9c5

SHA1
75ac3347aae0a9dc3520ce0d31ca6ee2c7f4bbe5

SHA256
4cb5fdd185102520c29c5975190f67567eeffaa42dc3692ee0cc9595b8a07e20

SHA512
abd6cac229ffac33e6ec887e41b041c4e02a5da1a054c474549657dfda326afbfd127c435f796d2945b0eb1d9586599936d0ddae339845dd43a91610c5baaa5b

Download Submit
memory/1144-36-0x0000000000830000-0x0000000000904000-memory.dmp

Filesize
848KB

Download
memory/2392-12-0x0000000000590000-0x000000000059C000-memory.dmp

Filesize
48KB

Download
memory/2392-16-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-7-0x0000000000980000-0x0000000000998000-memory.dmp

Filesize
96KB

Download
memory/2392-8-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-10-0x0000000000570000-0x000000000057E000-memory.dmp

Filesize
56KB

Download
memory/2392-0-0x000007FEF5E73000-0x000007FEF5E74000-memory.dmp

Filesize
4KB

Download
memory/2392-14-0x00000000009A0000-0x00000000009B2000-memory.dmp

Filesize
72KB

Download
memory/2392-5-0x0000000000940000-0x000000000095C000-memory.dmp

Filesize
112KB

Download
memory/2392-15-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-17-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-4-0x0000000000520000-0x000000000053C000-memory.dmp

Filesize
112KB

Download
memory/2392-32-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-2-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-1-0x00000000009E0000-0x0000000000AB4000-memory.dmp

Filesize
848KB

Download