mercurialgrabber | f54dd71bb0feb30a19123b93cc9ce60b3d6e603b9b5967c472b8cc35d9618c12

General

Target

d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe
Size

58KB
MD5

d5481b1558c02cc5b27eea52074e0d08
SHA1

a1eff2bf50c1323a8beb7b0e60f39e14a81b224d
SHA256

f54dd71bb0feb30a19123b93cc9ce60b3d6e603b9b5967c472b8cc35d9618c12
SHA512

4aa8cb795cc3d3fce1905ef7e3ea6f497e9c5be9e4fce188aa385b31b003ae1f403cf84bd14385f86149f47551b68ef2668b322bd39197b978fe60df6b3828ec
SSDEEP

1536:kk/MJnS3kgqrYMLDdAg7w9fQ65aXPrB72nkW:/kJnS0gQX5J7w9fjafrBykW

Score

10^/10

mercurialgrabber credential_access discovery spyware stealer

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/888502856733294672/TOj_bSh6Zkm2K7SzTPO616Cabe61-suc7UYdT52jA3Da2mmB2WhCEsY9-w2h5G8rjsRY

Signatures

Mercurial Grabber Stealer
Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.
stealer mercurialgrabber
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
40	discord.com
37	discord.com
38	discord.com

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
20	ip4.seeip.org
35	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4444 set thread context of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3100	4856	WerFault.exe	93

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.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	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4856	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4444 wrote to memory of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93
PID 4444 wrote to memory of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93
PID 4444 wrote to memory of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93
PID 4444 wrote to memory of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93
PID 4444 wrote to memory of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93
PID 4444 wrote to memory of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93
PID 4444 wrote to memory of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93
PID 4444 wrote to memory of 4856	4444	d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe	93

C:\Users\Admin\AppData\Local\Temp\d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:4856
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 2136
    3⤵
    - Program crash
    PID:3100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4856 -ip 4856
1⤵
PID:412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4444-8-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/4444-2-0x00000000053F0000-0x0000000005994000-memory.dmp

Filesize
5.6MB

Download
memory/4444-9-0x0000000004ED0000-0x0000000004EE4000-memory.dmp

Filesize
80KB

Download
memory/4444-10-0x00000000051F0000-0x000000000520E000-memory.dmp

Filesize
120KB

Download
memory/4444-4-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/4444-5-0x0000000005070000-0x000000000507A000-memory.dmp

Filesize
40KB

Download
memory/4444-6-0x0000000005150000-0x00000000051C6000-memory.dmp

Filesize
472KB

Download
memory/4444-7-0x000000007528E000-0x000000007528F000-memory.dmp

Filesize
4KB

Download
memory/4444-0-0x000000007528E000-0x000000007528F000-memory.dmp

Filesize
4KB

Download
memory/4444-1-0x0000000000640000-0x0000000000654000-memory.dmp

Filesize
80KB

Download
memory/4444-3-0x0000000004EE0000-0x0000000004F72000-memory.dmp

Filesize
584KB

Download
memory/4444-13-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/4856-11-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4856-14-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/4856-15-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/4856-16-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/4856-17-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Filesize
408KB

Download
memory/4856-21-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download

Analysis

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