dcrat | 38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26

Analysis

max time kernel
130s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-11-2024 15:27

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General

Target

38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
Size

675KB
MD5

314420bac969bcfb9510a0e8cc3686d6
SHA1

66f1d0a60a2727970476a105c88883f37270e30f
SHA256

38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26
SHA512

debf908add95aa0849451aef830e5e71724247d352dcb5dad6b02dca0d54e4e915a9430de80d970a4e7ef3749eb2fc7c6fa7839348d84f546d5934d713e7569c
SSDEEP

12288:C9X1yJ7/pZY7fiCI/YBfULiXPrQfkXmm1RhdLB9XFy+nM6D+:CVc7EaCQYBfcE1ZM6D+

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 family
dcrat

DCRat payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2668-1-0x00000000010E0000-0x0000000001190000-memory.dmp	family_dcrat_v2
behavioral1/files/0x0006000000019456-16.dat	family_dcrat_v2
behavioral1/memory/2728-27-0x0000000001230000-0x00000000012E0000-memory.dmp	family_dcrat_v2

Executes dropped EXE 1 IoCs

pid	Process
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.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 8 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Mail\ja-JP\38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
File created	C:\Program Files\Windows Mail\ja-JP\7a4a845c167dae	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
File created	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\System.exe	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
File created	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\27d1bcfc3c54e0	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
File created	C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\WmiPrvSE.exe	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
File created	C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\24dbde2999530e	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
File created	C:\Program Files (x86)\Common Files\SpeechEngines\smss.exe	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
File created	C:\Program Files (x86)\Common Files\SpeechEngines\69ddcba757bf72	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe

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
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
Token: SeDebugPrivilege	2728	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2068	2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe	30
PID 2668 wrote to memory of 2068	2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe	30
PID 2668 wrote to memory of 2068	2668	38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe	30
PID 2068 wrote to memory of 2356	2068	cmd.exe	32
PID 2068 wrote to memory of 2356	2068	cmd.exe	32
PID 2068 wrote to memory of 2356	2068	cmd.exe	32
PID 2068 wrote to memory of 2776	2068	cmd.exe	33
PID 2068 wrote to memory of 2776	2068	cmd.exe	33
PID 2068 wrote to memory of 2776	2068	cmd.exe	33
PID 2068 wrote to memory of 2728	2068	cmd.exe	34
PID 2068 wrote to memory of 2728	2068	cmd.exe	34
PID 2068 wrote to memory of 2728	2068	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
"C:\Users\Admin\AppData\Local\Temp\38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- 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\4zXT1a7zio.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2068
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2356
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2776
- - C:\Program Files\Windows Mail\ja-JP\38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
    "C:\Program Files\Windows Mail\ja-JP\38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2728

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\WmiPrvSE.exe

Filesize
675KB

MD5
314420bac969bcfb9510a0e8cc3686d6

SHA1
66f1d0a60a2727970476a105c88883f37270e30f

SHA256
38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26

SHA512
debf908add95aa0849451aef830e5e71724247d352dcb5dad6b02dca0d54e4e915a9430de80d970a4e7ef3749eb2fc7c6fa7839348d84f546d5934d713e7569c

Download Submit
C:\Users\Admin\AppData\Local\Temp\4zXT1a7zio.bat

Filesize
280B

MD5
11720303e4c4b934a575e6bd0a5bd820

SHA1
237acf6698fb1206519d9c059a0a0b0cc6c9bbda

SHA256
fac80ff470097aa7ddc0f331632632ca97105efa55d3a11f5e8de89ec77b4654

SHA512
1ad366e84503557aa19509395def3917ce443f4f4e9692c40d1348eb1f6d34b18e7a03a814a996b099138495c0a238f93be132e29e65616889edebcb8018cd2b

Download Submit
memory/2668-0-0x000007FEF6113000-0x000007FEF6114000-memory.dmp

Filesize
4KB

Download
memory/2668-1-0x00000000010E0000-0x0000000001190000-memory.dmp

Filesize
704KB

Download
memory/2668-2-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2668-4-0x0000000000440000-0x000000000045C000-memory.dmp

Filesize
112KB

Download
memory/2668-6-0x0000000000460000-0x0000000000478000-memory.dmp

Filesize
96KB

Download
memory/2668-7-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2668-21-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2668-23-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2728-27-0x0000000001230000-0x00000000012E0000-memory.dmp

Filesize
704KB

Download