revengerat | 7a538b979c2a126fb287ed7bbb18ac55687273dfbac2c09de85f073c9bf5e3df

General

Target

Quotation #01521.exe
Size

816KB
MD5

73619a5f7eab7a80e0fbbd5c8493c9b4
SHA1

84db67126574c21ef3233518452876ad123b4aa1
SHA256

7a538b979c2a126fb287ed7bbb18ac55687273dfbac2c09de85f073c9bf5e3df
SHA512

b92f4239da62411edcbf2378e67e28a307752f1b55d5977527e83069630a5d9894bb4f7138473da42f183b6fc5cdcb334aff76805acbae6908b35ed8716940c4

Score

10^/10

revengerat 2021 persistence stealer trojan

Malware Config

Extracted

Family

revengerat

Botnet

2021

C2

chongmei33.myddns.rocks:57438

37.120.208.40:57438

Mutex

RV_MUTEX-ITXZMONFueOciqX

Signatures

RevengeRAT
Remote-access trojan with a wide range of capabilities.
trojan revengerat

RevengeRat Executable 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/3844-23-0x0000000000400000-0x000000000041E000-memory.dmp	revengerat
behavioral2/memory/3844-24-0x000000000041B10E-mapping.dmp	revengerat

Executes dropped EXE 2 IoCs

Processes:

word.exeword.exe

pid process

3216 word.exe
3844 word.exe

pid	process
3216	word.exe
3844	word.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\word = "C:\\Users\\Admin\\word.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

word.exe

description pid process target process

PID 3216 set thread context of 3844 3216 word.exe word.exe

description	pid	process	target process
PID 3216 set thread context of 3844	3216	word.exe	word.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

Processes:

word.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\CENTRALPROCESSOR\0	word.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	word.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

Quotation #01521.exeword.exe

pid	process
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
1156	Quotation #01521.exe
3216	word.exe
3216	word.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Quotation #01521.exeword.exeword.exe

description pid process

Token: SeDebugPrivilege 1156 Quotation #01521.exe
Token: SeDebugPrivilege 3216 word.exe
Token: SeDebugPrivilege 3844 word.exe

description	pid	process
Token: SeDebugPrivilege	1156	Quotation #01521.exe
Token: SeDebugPrivilege	3216	word.exe
Token: SeDebugPrivilege	3844	word.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

Quotation #01521.execmd.exeword.exe

description	pid	process	target process
PID 1156 wrote to memory of 3412	1156	Quotation #01521.exe	cmd.exe
PID 1156 wrote to memory of 3412	1156	Quotation #01521.exe	cmd.exe
PID 1156 wrote to memory of 3412	1156	Quotation #01521.exe	cmd.exe
PID 3412 wrote to memory of 2632	3412	cmd.exe	reg.exe
PID 3412 wrote to memory of 2632	3412	cmd.exe	reg.exe
PID 3412 wrote to memory of 2632	3412	cmd.exe	reg.exe
PID 1156 wrote to memory of 3216	1156	Quotation #01521.exe	word.exe
PID 1156 wrote to memory of 3216	1156	Quotation #01521.exe	word.exe
PID 1156 wrote to memory of 3216	1156	Quotation #01521.exe	word.exe
PID 3216 wrote to memory of 3844	3216	word.exe	word.exe
PID 3216 wrote to memory of 3844	3216	word.exe	word.exe
PID 3216 wrote to memory of 3844	3216	word.exe	word.exe
PID 3216 wrote to memory of 3844	3216	word.exe	word.exe
PID 3216 wrote to memory of 3844	3216	word.exe	word.exe
PID 3216 wrote to memory of 3844	3216	word.exe	word.exe
PID 3216 wrote to memory of 3844	3216	word.exe	word.exe

C:\Users\Admin\AppData\Local\Temp\Quotation #01521.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation #01521.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1156

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "word" /t REG_SZ /d "C:\Users\Admin\word.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3412

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "word" /t REG_SZ /d "C:\Users\Admin\word.exe"
3⤵
- Adds Run key to start application
PID:2632

C:\Users\Admin\word.exe
"C:\Users\Admin\word.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3216

C:\Users\Admin\word.exe
"C:\Users\Admin\word.exe"
3⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:3844

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\word.exe
MD5
73619a5f7eab7a80e0fbbd5c8493c9b4

SHA1
84db67126574c21ef3233518452876ad123b4aa1

SHA256
7a538b979c2a126fb287ed7bbb18ac55687273dfbac2c09de85f073c9bf5e3df

SHA512
b92f4239da62411edcbf2378e67e28a307752f1b55d5977527e83069630a5d9894bb4f7138473da42f183b6fc5cdcb334aff76805acbae6908b35ed8716940c4

Download Submit
C:\Users\Admin\word.exe
MD5
73619a5f7eab7a80e0fbbd5c8493c9b4

SHA1
84db67126574c21ef3233518452876ad123b4aa1

SHA256
7a538b979c2a126fb287ed7bbb18ac55687273dfbac2c09de85f073c9bf5e3df

SHA512
b92f4239da62411edcbf2378e67e28a307752f1b55d5977527e83069630a5d9894bb4f7138473da42f183b6fc5cdcb334aff76805acbae6908b35ed8716940c4

Download Submit
C:\Users\Admin\word.exe
MD5
73619a5f7eab7a80e0fbbd5c8493c9b4

SHA1
84db67126574c21ef3233518452876ad123b4aa1

SHA256
7a538b979c2a126fb287ed7bbb18ac55687273dfbac2c09de85f073c9bf5e3df

SHA512
b92f4239da62411edcbf2378e67e28a307752f1b55d5977527e83069630a5d9894bb4f7138473da42f183b6fc5cdcb334aff76805acbae6908b35ed8716940c4

Download Submit
memory/1156-8-0x0000000007740000-0x0000000007741000-memory.dmp

Filesize
4KB

Download
memory/1156-5-0x0000000004D30000-0x0000000004D31000-memory.dmp

Filesize
4KB

Download
memory/1156-2-0x0000000073CB0000-0x000000007439E000-memory.dmp

Filesize
6.9MB

Download
memory/1156-3-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/1156-7-0x0000000004F50000-0x0000000004F51000-memory.dmp

Filesize
4KB

Download
memory/1156-6-0x0000000004CC0000-0x0000000004CDE000-memory.dmp

Filesize
120KB

Download
memory/2632-10-0x0000000000000000-mapping.dmp

Download
memory/3216-11-0x0000000000000000-mapping.dmp

Download
memory/3216-14-0x0000000073CB0000-0x000000007439E000-memory.dmp

Filesize
6.9MB

Download
memory/3216-21-0x00000000051D0000-0x00000000051DB000-memory.dmp

Filesize
44KB

Download
memory/3216-22-0x0000000005200000-0x0000000005201000-memory.dmp

Filesize
4KB

Download
memory/3412-9-0x0000000000000000-mapping.dmp

Download
memory/3844-23-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3844-24-0x000000000041B10E-mapping.dmp

Download
memory/3844-26-0x0000000073CB0000-0x000000007439E000-memory.dmp

Filesize
6.9MB

Download
memory/3844-29-0x0000000005E10000-0x0000000005E11000-memory.dmp

Filesize
4KB

Download
memory/3844-31-0x0000000005910000-0x0000000005911000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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