stealc | deba2be10d757679996d33d70d37b968088ba37e1d0f86d71beb8be38c34262f

General

Target

Grammarly Promotional Launcher.exe
Size

20.4MB
MD5

9ed667ef1d116c0cb1051b8001b6ea0f
SHA1

cbe4fdb8847ff9b5d0aa1e0a43bb3abd28f4a875
SHA256

deba2be10d757679996d33d70d37b968088ba37e1d0f86d71beb8be38c34262f
SHA512

4fc726f8f2ca7f024f5db1a660a3c9dff109014cc2f56097470b317950d05956c084f2e19fb9da3d14d589444c2bb0a7a370bce8b5dc049b5d3e774994bdd4e1
SSDEEP

393216:onRZwqeWLCKhc+0Uz+JD8rY5Pobe7n/k8MoeTtqLiVc4GYbJQp:CN1hxX+QrY5PAe7/kHtsii4bbJG

Score

10^/10

stealc 9323114451583182971321730716 spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

9323114451583182971321730716

C2

http://89.23.108.122

Attributes

url_path
/e510c4e87f874d68.php

rc4.plain

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

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-1-5-21-528036852-1341495193-1175965888-1000\Control Panel\International\Geo\Nation	Grammarly Promotional Launcher.exe

Loads dropped DLL 2 IoCs

pid	Process
4788	MSBuild.exe
4788	MSBuild.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\F:	Grammarly Promotional Launcher.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1884 set thread context of 4788	1884	Grammarly Promotional Launcher.exe	91

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

System Information Discovery
T1082

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
1884	Grammarly Promotional Launcher.exe
2144	powershell.exe
2144	powershell.exe
4788	MSBuild.exe
4788	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2144	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 2144	1884	Grammarly Promotional Launcher.exe	88
PID 1884 wrote to memory of 2144	1884	Grammarly Promotional Launcher.exe	88
PID 1884 wrote to memory of 2972	1884	Grammarly Promotional Launcher.exe	90
PID 1884 wrote to memory of 2972	1884	Grammarly Promotional Launcher.exe	90
PID 1884 wrote to memory of 2972	1884	Grammarly Promotional Launcher.exe	90
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91
PID 1884 wrote to memory of 4788	1884	Grammarly Promotional Launcher.exe	91

C:\Users\Admin\AppData\Local\Temp\Grammarly Promotional Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\Grammarly Promotional Launcher.exe"
1⤵
- Checks computer location settings
- Enumerates connected drives
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBzACAAMQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2144
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:2972
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_llmsui1s.qim.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1884-20-0x00007FFC34300000-0x00007FFC34302000-memory.dmp

Filesize
8KB

Download
memory/1884-22-0x0000000140000000-0x0000000141469000-memory.dmp

Filesize
20.4MB

Download
memory/1884-5-0x00007FFC34210000-0x00007FFC34212000-memory.dmp

Filesize
8KB

Download
memory/1884-6-0x00007FFC34220000-0x00007FFC34222000-memory.dmp

Filesize
8KB

Download
memory/1884-7-0x00007FFC34230000-0x00007FFC34232000-memory.dmp

Filesize
8KB

Download
memory/1884-0-0x00007FFC341D0000-0x00007FFC341D2000-memory.dmp

Filesize
8KB

Download
memory/1884-9-0x00007FFC34250000-0x00007FFC34252000-memory.dmp

Filesize
8KB

Download
memory/1884-10-0x00007FFC34260000-0x00007FFC34262000-memory.dmp

Filesize
8KB

Download
memory/1884-11-0x00007FFC34270000-0x00007FFC34272000-memory.dmp

Filesize
8KB

Download
memory/1884-13-0x00007FFC34290000-0x00007FFC34292000-memory.dmp

Filesize
8KB

Download
memory/1884-12-0x00007FFC34280000-0x00007FFC34282000-memory.dmp

Filesize
8KB

Download
memory/1884-15-0x00007FFC342B0000-0x00007FFC342B2000-memory.dmp

Filesize
8KB

Download
memory/1884-14-0x00007FFC342A0000-0x00007FFC342A2000-memory.dmp

Filesize
8KB

Download
memory/1884-16-0x00007FFC342C0000-0x00007FFC342C2000-memory.dmp

Filesize
8KB

Download
memory/1884-17-0x00007FFC342D0000-0x00007FFC342D2000-memory.dmp

Filesize
8KB

Download
memory/1884-18-0x00007FFC342E0000-0x00007FFC342E2000-memory.dmp

Filesize
8KB

Download
memory/1884-19-0x00007FFC342F0000-0x00007FFC342F2000-memory.dmp

Filesize
8KB

Download
memory/1884-1-0x0000000140000000-0x0000000141469000-memory.dmp

Filesize
20.4MB

Download
memory/1884-3-0x00007FFC341F0000-0x00007FFC341F2000-memory.dmp

Filesize
8KB

Download
memory/1884-21-0x0000000140000000-0x0000000141469000-memory.dmp

Filesize
20.4MB

Download
memory/1884-8-0x00007FFC34240000-0x00007FFC34242000-memory.dmp

Filesize
8KB

Download
memory/1884-4-0x00007FFC34200000-0x00007FFC34202000-memory.dmp

Filesize
8KB

Download
memory/1884-2-0x00007FFC341E0000-0x00007FFC341E2000-memory.dmp

Filesize
8KB

Download
memory/1884-46-0x0000000140000000-0x0000000141469000-memory.dmp

Filesize
20.4MB

Download
memory/2144-29-0x0000023DEC8F0000-0x0000023DEC912000-memory.dmp

Filesize
136KB

Download
memory/2144-36-0x00007FFC152B0000-0x00007FFC15D71000-memory.dmp

Filesize
10.8MB

Download
memory/2144-37-0x0000023DEC930000-0x0000023DEC940000-memory.dmp

Filesize
64KB

Download
memory/2144-38-0x0000023DEC930000-0x0000023DEC940000-memory.dmp

Filesize
64KB

Download
memory/2144-41-0x00007FFC152B0000-0x00007FFC15D71000-memory.dmp

Filesize
10.8MB

Download
memory/2144-34-0x0000023DEC930000-0x0000023DEC940000-memory.dmp

Filesize
64KB

Download
memory/2144-35-0x0000023DEC930000-0x0000023DEC940000-memory.dmp

Filesize
64KB

Download
memory/2144-33-0x00007FFC152B0000-0x00007FFC15D71000-memory.dmp

Filesize
10.8MB

Download
memory/4788-42-0x0000000000400000-0x000000000062D000-memory.dmp

Filesize
2.2MB

Download
memory/4788-47-0x0000000000400000-0x000000000062D000-memory.dmp

Filesize
2.2MB

Download
memory/4788-48-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4788-45-0x0000000000400000-0x000000000062D000-memory.dmp

Filesize
2.2MB

Download
memory/4788-113-0x0000000000400000-0x000000000062D000-memory.dmp

Filesize
2.2MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads