stealc | fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b

General

Target

fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
Size

403KB
MD5

57898e37ce8ca2e0cd1a0e205eb857ae
SHA1

45eb8c36ef0198d205a68c50190e0983cf6b55b2
SHA256

fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b
SHA512

f7fe7d4236070aefcec13c5d4de692ce899328fe989c94fdaeec42d05de0ccb1c7c03c20ab7ed3c23882603199ed7d06ee2371549fd9966325bb1ee8f6472f6a
SSDEEP

6144:psA3pbjuJg1hDDcvytIS1Kq0j9Or2rGIJl5KBFRvDHf1:psmpbjuJgzbh0BO6Vl0Vvj1

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 2 IoCs

resource	yara_rule
behavioral1/memory/1900-143-0x000000001DE70000-0x000000001DE94000-memory.dmp	family_zgrat_v1
behavioral1/memory/1900-139-0x000000001EBE0000-0x000000001ECEA000-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
1988	u22k.0.exe
1876	u22k.1.exe

Loads dropped DLL 11 IoCs

pid	Process
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
1988	u22k.0.exe
1988	u22k.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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u22k.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u22k.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u22k.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	u22k.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u22k.0.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1988	u22k.0.exe
1900	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1900	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1900	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1900	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1900	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe
1876	u22k.1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 1988	2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe	28
PID 2684 wrote to memory of 1988	2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe	28
PID 2684 wrote to memory of 1988	2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe	28
PID 2684 wrote to memory of 1988	2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe	28
PID 2684 wrote to memory of 1876	2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe	29
PID 2684 wrote to memory of 1876	2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe	29
PID 2684 wrote to memory of 1876	2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe	29
PID 2684 wrote to memory of 1876	2684	fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe	29
PID 1876 wrote to memory of 1900	1876	u22k.1.exe	31
PID 1876 wrote to memory of 1900	1876	u22k.1.exe	31
PID 1876 wrote to memory of 1900	1876	u22k.1.exe	31
PID 1876 wrote to memory of 1900	1876	u22k.1.exe	31

C:\Users\Admin\AppData\Local\Temp\fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe
"C:\Users\Admin\AppData\Local\Temp\fcc6a313c45131c32d5f3de0a4f5a6b28355851fbf427782b5908954e31e622b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\u22k.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u22k.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1988
- C:\Users\Admin\AppData\Local\Temp\u22k.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u22k.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1876
- - 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:1900

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\049b7335d372bd07248452d0b58e37cfb8420ac5b148b226adcb19ae95655a7b\288f4021872349138fffe009b81240f4.tmp

Filesize
1KB

MD5
2b021c7e33ff570964870f7189f41dc9

SHA1
d4642572900c71c1610a36ea086de1afde564b8a

SHA256
d6885c0c2eb5786c9914ff3df3d8c4e00b629ae6c6885ef792a3e1f2c37a967e

SHA512
99256d9d2f76e55c4d93c4a7eebb81c40bcc993e35d5a970edca06bd984df6161fb4e3317c2e90d6f33cec4f1f2bf1e95ad193bfefdfb59a0dc3d546c192b383

Download Submit
C:\Users\Admin\AppData\Local\Temp\u22k.1.exe

Filesize
2.1MB

MD5
0ef4e27e914de46c682cd3d6f564d1cf

SHA1
aa00eb2e895a80e1e5881d1b4618c844858ecb21

SHA256
c7be7abeb3504d7eb53fa89e99029bea1e715fa4b3964ac0c54a298af5781f75

SHA512
a6c94949b67dc653fefd6e9b9726307c18e91ced8aa82be950561383b75c5823d5241a65d68157a7249ea34923148b0b1f877d5137e3dc44bbe076fb920b63f9

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\u22k.0.exe

Filesize
206KB

MD5
0917be53327ea132956255dcab650a82

SHA1
b60818917f645a8a9af3b530e3ae37c1f002be2f

SHA256
211c34660898480e0777c6ef6f61bf2111f6550e00b40cab859543d567dc455a

SHA512
a72acc24ba813d983bbf2ecab7929d0aab4e25637ae43e85b973a5105429bd15c061415fd855737620caaf81b456b2d6ba57f85566245efbe5f8b5db5560932a

Download Submit
\Users\Admin\AppData\Local\Temp\u22k.1.exe

Filesize
448KB

MD5
714ed1fe342bcd239ba4553e3f6c4f07

SHA1
259a760f115258d0989f86a1c72254846ba993d8

SHA256
178620f812db0c3b5d192daa2fc32c9313c073151522ca358f9266cef2c2597d

SHA512
1c80026f7d731c2a964cfa3fe7078c4602ecb0a3d08f431c655f66f990ccb90887886c76cf9b70bd18bd58fcc992fff6b54bec3a492d8e811855cc0d56fb198f

Download Submit
\Users\Admin\AppData\Local\Temp\u22k.1.exe

Filesize
2.8MB

MD5
74e52168f2ae714da4a52c75e78effcc

SHA1
97636f0e3c47a714a9553924428015584c985ed9

SHA256
f59e0e9ef3491fdbb3b50fa47bba17d6cb54613851c436a27fa417dbcaf3b0f7

SHA512
5d4a160b390c6cbf909bec1f8f39ba8d17ea3965ce11aaf20e232828c11e77cc0fe5413a37dd09e3ccd09c25fbe241df67b409ed36056f446b8e179a6e2f5726

Download Submit
\Users\Admin\AppData\Local\Temp\u22k.1.exe

Filesize
1.2MB

MD5
4568a09ed4c4d33d5927ca49126175e5

SHA1
c85098d1fd73efff640e724dbee98fbb8ad8ceea

SHA256
7f7cf5fbe5c5025d6b6ee86b78e133e0f93aab5ba94e272ae716bfee5f9d77d1

SHA512
ccadb3bea90c874699f6f6155bdebcf7a6a37489247a1786dd26878f57d94a1d03083ec2e1988e4213e260dac1b8de424f4dabe81ed33e17c9734dc9b670f45e

Download Submit
memory/1876-135-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1876-124-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1900-151-0x000000001FCA0000-0x000000001FFA0000-memory.dmp

Filesize
3.0MB

Download
memory/1900-154-0x0000000005670000-0x000000000567A000-memory.dmp

Filesize
40KB

Download
memory/1900-164-0x0000000005670000-0x000000000567A000-memory.dmp

Filesize
40KB

Download
memory/1900-160-0x00000000059F0000-0x00000000059FC000-memory.dmp

Filesize
48KB

Download
memory/1900-155-0x00000000059C0000-0x00000000059CA000-memory.dmp

Filesize
40KB

Download
memory/1900-156-0x000000001F690000-0x000000001F6F2000-memory.dmp

Filesize
392KB

Download
memory/1900-137-0x00000000008A0000-0x00000000040D4000-memory.dmp

Filesize
56.2MB

Download
memory/1900-157-0x00000000059D0000-0x00000000059F2000-memory.dmp

Filesize
136KB

Download
memory/1900-141-0x0000000005820000-0x000000000582C000-memory.dmp

Filesize
48KB

Download
memory/1900-142-0x0000000005810000-0x0000000005824000-memory.dmp

Filesize
80KB

Download
memory/1900-143-0x000000001DE70000-0x000000001DE94000-memory.dmp

Filesize
144KB

Download
memory/1900-140-0x00000000056D0000-0x00000000056E0000-memory.dmp

Filesize
64KB

Download
memory/1900-146-0x000000001F400000-0x000000001F4B2000-memory.dmp

Filesize
712KB

Download
memory/1900-145-0x000000001EA60000-0x000000001EA8A000-memory.dmp

Filesize
168KB

Download
memory/1900-144-0x000000001E070000-0x000000001E07A000-memory.dmp

Filesize
40KB

Download
memory/1900-139-0x000000001EBE0000-0x000000001ECEA000-memory.dmp

Filesize
1.0MB

Download
memory/1900-147-0x0000000000700000-0x000000000070A000-memory.dmp

Filesize
40KB

Download
memory/1900-153-0x0000000005670000-0x000000000567A000-memory.dmp

Filesize
40KB

Download
memory/1988-42-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/1988-138-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/1988-123-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/2684-1-0x0000000002BA0000-0x0000000002CA0000-memory.dmp

Filesize
1024KB

Download
memory/2684-2-0x00000000002B0000-0x000000000031C000-memory.dmp

Filesize
432KB

Download
memory/2684-37-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2684-36-0x0000000000400000-0x0000000002B22000-memory.dmp

Filesize
39.1MB

Download
memory/2684-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads