stealc | 73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771

General

Target

73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
Size

372KB
MD5

9f712ea5a04bfae2238764f668305642
SHA1

864debdeec4d00430661070fc1dab479cfc8a6ef
SHA256

73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771
SHA512

25ff360b96fd99abf9e0a6afbd489e3efdf76685b246384cd61ab692a828a1ee7cc508afd95273c10b45c5b7d358bee142a860b134f75375358045bf3b1363d3
SSDEEP

6144:pl+08UGGfdzF7qxvwcB793ituNKkzXwGZTapV:p808UGgdtqrhauN3XwwapV

Score

10^/10

stealc zgrat discovery rat spyware 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/876-123-0x0000000000C40000-0x0000000004474000-memory.dmp	family_zgrat_v1
behavioral1/memory/876-132-0x000000001EC50000-0x000000001ED5A000-memory.dmp	family_zgrat_v1
behavioral1/memory/876-136-0x0000000005A10000-0x0000000005A34000-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
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
3012	u18s.0.exe
2660	u18s.1.exe

Loads dropped DLL 11 IoCs

pid	Process
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
3012	u18s.0.exe
3012	u18s.0.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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	u18s.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u18s.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u18s.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	u18s.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u18s.0.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3012	u18s.0.exe
876	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
876	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
876	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
876	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
876	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	876	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe
2660	u18s.1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 3012	1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	28
PID 1612 wrote to memory of 3012	1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	28
PID 1612 wrote to memory of 3012	1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	28
PID 1612 wrote to memory of 3012	1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	28
PID 1612 wrote to memory of 2660	1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	30
PID 1612 wrote to memory of 2660	1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	30
PID 1612 wrote to memory of 2660	1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	30
PID 1612 wrote to memory of 2660	1612	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	30
PID 2660 wrote to memory of 876	2660	u18s.1.exe	34
PID 2660 wrote to memory of 876	2660	u18s.1.exe	34
PID 2660 wrote to memory of 876	2660	u18s.1.exe	34
PID 2660 wrote to memory of 876	2660	u18s.1.exe	34

C:\Users\Admin\AppData\Local\Temp\73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
"C:\Users\Admin\AppData\Local\Temp\73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Users\Admin\AppData\Local\Temp\u18s.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u18s.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3012
- C:\Users\Admin\AppData\Local\Temp\u18s.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u18s.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2660
- - 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:876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\ApplicationInsights\81950f7e7cbd108086cf2da3a401afdfffc60d9b485aac5dd52f7a137c00f950\7da8fe02ac4e478d94950079158c8868.tmp

Filesize
1KB

MD5
3b569e899e48a2ce2a65103237744f84

SHA1
337cef1dc5efe87c5c4f303811f2acaa279e93ec

SHA256
59d17ac7bbcbf49c9cf18de540ab1d4b2c14bb2ecdf10c8663d2f10c993a58dd

SHA512
b9c1b70c0d2919a5ad0dfeafa66ccb3a6e65eaf2e83a246b0a4e308f9d9a74bedb6d1dba59a81d03538608987cd6ad5922452028336061bb4c0d57bb390444d4

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

Filesize
3KB

MD5
cd1674bc6bddde4d1fba253de44b1e35

SHA1
54c05d9d48ad70a516c126ad7bda7ab999fec5d1

SHA256
a845efff2d732973e2404b8fafb7567d7528a9024b93af39f88c2db49aaa666e

SHA512
c9d841b5be8886cf6107cb9b924adb00dc9b0fe331aa62e6b705c168a85160da2f78e4339d809c10e1c2625659038df492ac672a1a4ffd49b2833371c9a14767

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

Filesize
2KB

MD5
323b62d98515abebc360654978e62157

SHA1
49aa69d8e35298c40a1d2861fb8b5dde7fc6e316

SHA256
ae88fa883a08992169c7bfaa1476f619082055ac390835a3ab41b58a4db749a0

SHA512
9ea06665c6a9bdc1ba2ad7995d32e1a48412e1205c2ea9c5fc5ffe37d8bdae12896ce9b7537fecc5d897cf0ed8491cefc381c43966c1a4229cad799fa0e1c570

Download Submit
\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
\Users\Admin\AppData\Local\Temp\u18s.0.exe

Filesize
206KB

MD5
0917be53327ea132956255dcab650a82

SHA1
b60818917f645a8a9af3b530e3ae37c1f002be2f

SHA256
211c34660898480e0777c6ef6f61bf2111f6550e00b40cab859543d567dc455a

SHA512
a72acc24ba813d983bbf2ecab7929d0aab4e25637ae43e85b973a5105429bd15c061415fd855737620caaf81b456b2d6ba57f85566245efbe5f8b5db5560932a

Download Submit
\Users\Admin\AppData\Local\Temp\u18s.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/876-141-0x00000000009B0000-0x00000000009BA000-memory.dmp

Filesize
40KB

Download
memory/876-153-0x0000000000C00000-0x0000000000C0A000-memory.dmp

Filesize
40KB

Download
memory/876-164-0x0000000000C00000-0x0000000000C0A000-memory.dmp

Filesize
40KB

Download
memory/876-165-0x0000000000C00000-0x0000000000C0A000-memory.dmp

Filesize
40KB

Download
memory/876-160-0x000000001E260000-0x000000001E26C000-memory.dmp

Filesize
48KB

Download
memory/876-157-0x00000000058F0000-0x0000000005912000-memory.dmp

Filesize
136KB

Download
memory/876-156-0x000000001E200000-0x000000001E262000-memory.dmp

Filesize
392KB

Download
memory/876-155-0x00000000058E0000-0x00000000058EA000-memory.dmp

Filesize
40KB

Download
memory/876-152-0x0000000000C00000-0x0000000000C0A000-memory.dmp

Filesize
40KB

Download
memory/876-145-0x000000001F840000-0x000000001FB40000-memory.dmp

Filesize
3.0MB

Download
memory/876-123-0x0000000000C40000-0x0000000004474000-memory.dmp

Filesize
56.2MB

Download
memory/876-140-0x000000001F1C0000-0x000000001F272000-memory.dmp

Filesize
712KB

Download
memory/876-132-0x000000001EC50000-0x000000001ED5A000-memory.dmp

Filesize
1.0MB

Download
memory/876-134-0x00000000009F0000-0x00000000009FC000-memory.dmp

Filesize
48KB

Download
memory/876-133-0x0000000000820000-0x0000000000830000-memory.dmp

Filesize
64KB

Download
memory/876-135-0x00000000009E0000-0x00000000009F4000-memory.dmp

Filesize
80KB

Download
memory/876-136-0x0000000005A10000-0x0000000005A34000-memory.dmp

Filesize
144KB

Download
memory/876-138-0x0000000000C30000-0x0000000000C3A000-memory.dmp

Filesize
40KB

Download
memory/876-139-0x000000001E9B0000-0x000000001E9DA000-memory.dmp

Filesize
168KB

Download
memory/1612-39-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1612-1-0x0000000001B10000-0x0000000001C10000-memory.dmp

Filesize
1024KB

Download
memory/1612-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1612-37-0x0000000001B10000-0x0000000001C10000-memory.dmp

Filesize
1024KB

Download
memory/1612-38-0x0000000000320000-0x000000000038C000-memory.dmp

Filesize
432KB

Download
memory/1612-2-0x0000000000320000-0x000000000038C000-memory.dmp

Filesize
432KB

Download
memory/1612-36-0x0000000000400000-0x0000000001A27000-memory.dmp

Filesize
22.2MB

Download
memory/2660-98-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2660-111-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3012-154-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/3012-131-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/3012-63-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3012-97-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads