stealc | fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083

General

Target

fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
Size

415KB
MD5

2c418334727e8fc2b5cfbd75f5d279ec
SHA1

554e3b34a4d09d61da5bb35fb50638cb74c4dc32
SHA256

fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083
SHA512

c21dd93e0b032d5daa1615f19e429adfc056b2a90b3358c36b0f614a1dd8dfa7e09d722c49bffa71227d3f4ce5b9802212bc41db219e90176087ef573d285af6
SSDEEP

6144:P50SXOdGHuDgJrhcqwNlpOE7oXLp3FkOfU49bCs7LrkA1:qSXOdvDIXY7O9X13FknszkA1

Score

10^/10

stealc zgrat discovery rat stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral1/memory/1632-73-0x0000000000970000-0x00000000041A4000-memory.dmp	family_zgrat_v1
behavioral1/memory/1632-74-0x000000001EF70000-0x000000001F07A000-memory.dmp	family_zgrat_v1
behavioral1/memory/1632-78-0x0000000000950000-0x0000000000974000-memory.dmp	family_zgrat_v1

Stealc
Stealc is an infostealer written in C++.
stealer stealc
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

Detects encrypted or obfuscated .NET executables 1 IoCs

resource	yara_rule
behavioral1/memory/1632-73-0x0000000000970000-0x00000000041A4000-memory.dmp	INDICATOR_EXE_DotNET_Encrypted

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
3004	u1to.0.exe
2708	u1to.1.exe

Loads dropped DLL 8 IoCs

pid	Process
2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1to.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1to.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1to.1.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u1to.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1to.0.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1632	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1632	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1632	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1632	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1632	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3004	u1to.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe
2708	u1to.1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 3004	2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	28
PID 2364 wrote to memory of 3004	2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	28
PID 2364 wrote to memory of 3004	2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	28
PID 2364 wrote to memory of 3004	2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	28
PID 2364 wrote to memory of 2708	2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	29
PID 2364 wrote to memory of 2708	2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	29
PID 2364 wrote to memory of 2708	2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	29
PID 2364 wrote to memory of 2708	2364	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	29
PID 2708 wrote to memory of 1632	2708	u1to.1.exe	31
PID 2708 wrote to memory of 1632	2708	u1to.1.exe	31
PID 2708 wrote to memory of 1632	2708	u1to.1.exe	31
PID 2708 wrote to memory of 1632	2708	u1to.1.exe	31

C:\Users\Admin\AppData\Local\Temp\fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
"C:\Users\Admin\AppData\Local\Temp\fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\u1to.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1to.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3004
- C:\Users\Admin\AppData\Local\Temp\u1to.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1to.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
    "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\ApplicationInsights\bd92d7984d802ff9a1e24336bd1ccb4209c69a1bd116225cd9479ac9d0f516c4\446b222b0a5b4aee9d1faa69d891f999.tmp

Filesize
1KB

MD5
4423f022cc01e44bd75e45a85715b293

SHA1
3d968fdc72980ee67719ba4edeaa5caf2a26baf8

SHA256
ef6fff7ef622733606f41afc16fd926a47ddc19d6e441959cbd61cd9783f8f32

SHA512
1453061164e399ebe2dd2ce03a5f8bb908bfe3d5c6aa530f3a235e95a6061219ef45c00ba087a5a77b6d03c88922ee10106fdd4b4da1538a4c0cf2d9334b0632

Download Submit
C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

Filesize
3KB

MD5
c204db41b6a83a4ba241206ad36f87b2

SHA1
4c4477dc8bbbb0fc67f9c5426bf5886ef967845b

SHA256
2c48b3a5d1719ddb6cd6914ecda1694c0ed78f3f299224b68442c34c9414d676

SHA512
5a91b36bf987b705e76290e0900dec2497548697bb0b4fee3ef21cac0e35e413a2a3b1b7ad16e9d126ee2fb159710ebe35f2a83072558fa868fac5b8d837a6fb

Download Submit
\Users\Admin\AppData\Local\Temp\u1to.0.exe

Filesize
225KB

MD5
defa7c78ede3a0e93381126de0234328

SHA1
90fbdb299db7e54ed706f20821846622a124e6ff

SHA256
1eb49064f0f461813a0e86abb774d7664272f295a21ca0b5847dcfcf91926a24

SHA512
dfd2ca5e8f403ca0668c7c3e8d34367dec0247a77442906ca265acfa7c08496b81d911a7c9c280b5baab05c7b79d3566dd26912501026f9da26a73354a4a9fc8

Download Submit
\Users\Admin\AppData\Local\Temp\u1to.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1632-78-0x0000000000950000-0x0000000000974000-memory.dmp

Filesize
144KB

Download
memory/1632-82-0x000000001EA80000-0x000000001EB32000-memory.dmp

Filesize
712KB

Download
memory/1632-101-0x00000000059A0000-0x00000000059AA000-memory.dmp

Filesize
40KB

Download
memory/1632-96-0x000000001E410000-0x000000001E41C000-memory.dmp

Filesize
48KB

Download
memory/1632-93-0x000000001E3F0000-0x000000001E412000-memory.dmp

Filesize
136KB

Download
memory/1632-92-0x000000001E880000-0x000000001E8E2000-memory.dmp

Filesize
392KB

Download
memory/1632-91-0x000000001DFD0000-0x000000001DFDA000-memory.dmp

Filesize
40KB

Download
memory/1632-73-0x0000000000970000-0x00000000041A4000-memory.dmp

Filesize
56.2MB

Download
memory/1632-74-0x000000001EF70000-0x000000001F07A000-memory.dmp

Filesize
1.0MB

Download
memory/1632-75-0x00000000003E0000-0x00000000003F0000-memory.dmp

Filesize
64KB

Download
memory/1632-76-0x0000000000410000-0x000000000041C000-memory.dmp

Filesize
48KB

Download
memory/1632-77-0x00000000003F0000-0x0000000000404000-memory.dmp

Filesize
80KB

Download
memory/1632-89-0x00000000059A0000-0x00000000059AA000-memory.dmp

Filesize
40KB

Download
memory/1632-80-0x00000000005D0000-0x00000000005DA000-memory.dmp

Filesize
40KB

Download
memory/1632-81-0x0000000005AE0000-0x0000000005B0A000-memory.dmp

Filesize
168KB

Download
memory/1632-90-0x00000000059A0000-0x00000000059AA000-memory.dmp

Filesize
40KB

Download
memory/1632-83-0x0000000005770000-0x000000000577A000-memory.dmp

Filesize
40KB

Download
memory/1632-87-0x000000001FC40000-0x000000001FF40000-memory.dmp

Filesize
3.0MB

Download
memory/2364-36-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2364-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2364-1-0x0000000001BF0000-0x0000000001CF0000-memory.dmp

Filesize
1024KB

Download
memory/2364-34-0x0000000000400000-0x0000000001A32000-memory.dmp

Filesize
22.2MB

Download
memory/2364-35-0x0000000001BF0000-0x0000000001CF0000-memory.dmp

Filesize
1024KB

Download
memory/2364-2-0x0000000000230000-0x000000000029C000-memory.dmp

Filesize
432KB

Download
memory/2708-72-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3004-69-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3004-114-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3004-123-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3004-132-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads