dcrat | 858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f

Analysis

max time kernel
144s
max time network
154s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-12-2024 02:42

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General

Target

858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
Size

1.6MB
MD5

8c6e4c86c216b898f24ff14b417c4369
SHA1

266e7d01ba11cd7914451c798199596f4d2f7b53
SHA256

858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f
SHA512

3f6416bf0b7989b522d399e151cc755783b9b7afe9cde559f8207fad6c043e24f85b22c3a583329e1620e862c7824249c536209b6be5e093a2b580c2fc52f660
SSDEEP

24576:o2a0H/WPj+rsO6AOhaDxL/aySUYj79FcPX6t1:va0SKsOP1L/KzEP

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

DCRat payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2248-1-0x00000000002A0000-0x000000000043C000-memory.dmp	family_dcrat_v2
behavioral1/files/0x000a000000011c28-30.dat	family_dcrat_v2
behavioral1/memory/2572-32-0x0000000000C10000-0x0000000000DAC000-memory.dmp	family_dcrat_v2

Executes dropped EXE 1 IoCs

pid	Process
2572	staticfile.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
Token: SeDebugPrivilege	2572	staticfile.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2572	staticfile.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2356	2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe	30
PID 2248 wrote to memory of 2356	2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe	30
PID 2248 wrote to memory of 2356	2248	858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe	30
PID 2356 wrote to memory of 2680	2356	cmd.exe	32
PID 2356 wrote to memory of 2680	2356	cmd.exe	32
PID 2356 wrote to memory of 2680	2356	cmd.exe	32
PID 2356 wrote to memory of 2716	2356	cmd.exe	33
PID 2356 wrote to memory of 2716	2356	cmd.exe	33
PID 2356 wrote to memory of 2716	2356	cmd.exe	33
PID 2356 wrote to memory of 2572	2356	cmd.exe	34
PID 2356 wrote to memory of 2572	2356	cmd.exe	34
PID 2356 wrote to memory of 2572	2356	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe
"C:\Users\Admin\AppData\Local\Temp\858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\5mRcay16p8.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2356
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2680
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2716
- - C:\Users\Admin\AppData\Local\staticfile.exe
    "C:\Users\Admin\AppData\Local\staticfile.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2572

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\5mRcay16p8.bat

Filesize
219B

MD5
34c6fbd8fc938d6168d1d6780e5ad853

SHA1
38348976d1697ac0da6894ecba46fc12331dd2b0

SHA256
eeb460170d4dab4278c1e5b4f743ade8359457ddbbe6d6b75e4d2a1c3803dc03

SHA512
6e76175018b5d841396f56bf126a6d56d6b76c5f925b3481d6c215e0996260599b7c47c6bd01b049c3743acd16e722d54f03f9b2708b2e9cf6dbcb553ec225bb

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

Filesize
1.6MB

MD5
8c6e4c86c216b898f24ff14b417c4369

SHA1
266e7d01ba11cd7914451c798199596f4d2f7b53

SHA256
858fff104da670b640eff2a93b7fa4b794ae554c30a409864d00f3b7ecc1e09f

SHA512
3f6416bf0b7989b522d399e151cc755783b9b7afe9cde559f8207fad6c043e24f85b22c3a583329e1620e862c7824249c536209b6be5e093a2b580c2fc52f660

Download Submit
memory/2248-12-0x00000000020D0000-0x00000000020E2000-memory.dmp

Filesize
72KB

Download
memory/2248-17-0x00000000006D0000-0x00000000006DE000-memory.dmp

Filesize
56KB

Download
memory/2248-5-0x00000000006B0000-0x00000000006CC000-memory.dmp

Filesize
112KB

Download
memory/2248-7-0x0000000001F90000-0x0000000001FA8000-memory.dmp

Filesize
96KB

Download
memory/2248-9-0x00000000020B0000-0x00000000020C6000-memory.dmp

Filesize
88KB

Download
memory/2248-10-0x000007FEF6450000-0x000007FEF6E3C000-memory.dmp

Filesize
9.9MB

Download
memory/2248-0-0x000007FEF6453000-0x000007FEF6454000-memory.dmp

Filesize
4KB

Download
memory/2248-14-0x00000000021E0000-0x000000000223A000-memory.dmp

Filesize
360KB

Download
memory/2248-15-0x000007FEF6450000-0x000007FEF6E3C000-memory.dmp

Filesize
9.9MB

Download
memory/2248-4-0x00000000006D0000-0x00000000006EC000-memory.dmp

Filesize
112KB

Download
memory/2248-19-0x000000001A7E0000-0x000000001A82E000-memory.dmp

Filesize
312KB

Download
memory/2248-25-0x000007FEF6450000-0x000007FEF6E3C000-memory.dmp

Filesize
9.9MB

Download
memory/2248-27-0x000007FEF6450000-0x000007FEF6E3C000-memory.dmp

Filesize
9.9MB

Download
memory/2248-28-0x000007FEF6450000-0x000007FEF6E3C000-memory.dmp

Filesize
9.9MB

Download
memory/2248-2-0x000007FEF6450000-0x000007FEF6E3C000-memory.dmp

Filesize
9.9MB

Download
memory/2248-1-0x00000000002A0000-0x000000000043C000-memory.dmp

Filesize
1.6MB

Download
memory/2572-32-0x0000000000C10000-0x0000000000DAC000-memory.dmp

Filesize
1.6MB

Download