dcrat | 00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c

General

Target
00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
Size 828KB
Sample240516-bcq69ada4v
SHA256 00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c
MD5 1b8dc013de93bb0edf121b38e7f8ab6f
SHA1 2c17ada00c2b779f5e04a801265f151591e11e18
SHA512 4b23622774ea394608ade50bac520aebd64788d626e9fc316e57db8f4a4628cec221420955adae70d7ddcd7c273f6cac409d64f931e01e1a490b275788370d33
SSDEEP 12288:K8rQgxfLc/EHk/2Wk3D0bdxTZiLaO4Vb/5:VrzxfLFkHbXdVLVb/5
MD5 SHA1 SHA512 SSDEEP

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

Process spawned unexpected child process 21 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	1404	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4316	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	908	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4456	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1112	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3808	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4420	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	548	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2884	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	856	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1128	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	740	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2200	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	552	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4892	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4404	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4620	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3756	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4212	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3852	3620	schtasks.exe	89
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1616	3620	schtasks.exe	89

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/4660-1-0x00000000008F0000-0x00000000009C6000-memory.dmp	dcrat
behavioral2/files/0x000700000002327b-11.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe

Executes dropped EXE 1 IoCs

pid	Process
988	msedge.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Sidebar\00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
File created	C:\Program Files\Windows Sidebar\b0313517ac0ac7	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
File created	C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
File created	C:\Program Files\MsEdgeCrashpad\reports\ea9f0e6c9e2dcd	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SystemResources\Windows.Management.AutopilotResources\pris\msedge.exe	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
File created	C:\Windows\SystemResources\Windows.Management.AutopilotResources\pris\61a52ddc9dd915	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 21 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
4316	schtasks.exe
1112	schtasks.exe
856	schtasks.exe
740	schtasks.exe
552	schtasks.exe
4212	schtasks.exe
3808	schtasks.exe
4420	schtasks.exe
2884	schtasks.exe
1616	schtasks.exe
908	schtasks.exe
4456	schtasks.exe
548	schtasks.exe
4620	schtasks.exe
1404	schtasks.exe
1128	schtasks.exe
2200	schtasks.exe
4892	schtasks.exe
4404	schtasks.exe
3756	schtasks.exe
3852	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4660	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
988	msedge.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4660	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
Token: SeDebugPrivilege	988	msedge.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 988	4660	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe	111
PID 4660 wrote to memory of 988	4660	00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe	111

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\00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
"C:\Users\Admin\AppData\Local\Temp\00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Users\Admin\Saved Games\msedge.exe
  "C:\Users\Admin\Saved Games\msedge.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:988

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 6 /tr "'C:\odt\msedge.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1404

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\odt\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4316

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 14 /tr "'C:\odt\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 14 /tr "'C:\Windows\SystemResources\Windows.Management.AutopilotResources\pris\msedge.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4456

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Windows\SystemResources\Windows.Management.AutopilotResources\pris\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1112

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 9 /tr "'C:\Windows\SystemResources\Windows.Management.AutopilotResources\pris\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4420

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:548

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Saved Games\msedge.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:856

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Users\Admin\Saved Games\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1128

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\Saved Games\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:740

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c0" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Sidebar\00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2200

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c0" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Sidebar\00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4892

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 14 /tr "'C:\odt\Registry.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4404

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\odt\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4620

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 6 /tr "'C:\odt\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3756

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 8 /tr "'C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4212

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3852

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 6 /tr "'C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1616

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4132 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
1⤵
PID:4164

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe

Path C:\Program Files\Windows Sidebar\00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c.exe
Size 828KB
SHA256 00126f1a772fd459793f811457950e42177537f6387a76124d26b57266a79f1c
MD5 1b8dc013de93bb0edf121b38e7f8ab6f
SHA1 2c17ada00c2b779f5e04a801265f151591e11e18
SHA512 4b23622774ea394608ade50bac520aebd64788d626e9fc316e57db8f4a4628cec221420955adae70d7ddcd7c273f6cac409d64f931e01e1a490b275788370d33
SSDEEP 12288:K8rQgxfLc/EHk/2Wk3D0bdxTZiLaO4Vb/5:VrzxfLFkHbXdVLVb/5
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4660-0-0x00007FF8A2363000-0x00007FF8A2365000-memory.dmp

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memory/4660-1-0x00000000008F0000-0x00000000009C6000-memory.dmp

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memory/4660-2-0x00007FF8A2360000-0x00007FF8A2E21000-memory.dmp

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memory/4660-28-0x00007FF8A2360000-0x00007FF8A2E21000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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