isrstealer | 29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45

General

Target

29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe
Size

350KB
MD5

a84c6c2a6a5627b2544b1c831703abd7
SHA1

55d98f15ee6f13b9e455238cebadf1e8b105bac3
SHA256

29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45
SHA512

150d07599f05d057c618aa4412e5d343f440264380aefd19b1a1b3b1c37926c932d6b223bdeea9b3a8e8b4a626fe03fc0b8b4cccb23e266d4f45b0c32f8a8569
SSDEEP

6144:iQeCfZrhChF1+/j/g27x7XWQP0WPcr/szOXqle2RZiQ:iQBfZgF1+U27x7mQP0rTqOMeg

Score

10^/10

isrstealer collection stealer trojan upx

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1980-59-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1980-61-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1980-62-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/1980-73-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1980-85-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1980-86-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/1160-83-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1160-84-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1160-83-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1160-84-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1236-66-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1236-71-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1236-72-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1236-74-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1236-75-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1160-78-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1160-82-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1160-83-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1160-84-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exevbc.exe

description	pid	process	target process
PID 992 set thread context of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 1980 set thread context of 1236	1980	vbc.exe	vbc.exe
PID 1980 set thread context of 1160	1980	vbc.exe	vbc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe

description pid process

Token: SeDebugPrivilege 992 29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

1980 vbc.exe

description	pid	process
Token: SeDebugPrivilege	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe

pid	process
1980	vbc.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exevbc.exe

description	pid	process	target process
PID 992 wrote to memory of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 992 wrote to memory of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 992 wrote to memory of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 992 wrote to memory of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 992 wrote to memory of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 992 wrote to memory of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 992 wrote to memory of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 992 wrote to memory of 1980	992	29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1236	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe
PID 1980 wrote to memory of 1160	1980	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe
"C:\Users\Admin\AppData\Local\Temp\29d024a8b7e02bddc35ff727883a6039dc15cb9a003f2aa09b843a1490db5c45.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:992
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\GM3VElFw6q.ini"
    3⤵
    PID:1236
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\67kjGeItf3.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1160

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\GM3VElFw6q.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/992-54-0x0000000076561000-0x0000000076563000-memory.dmp

Filesize
8KB

Download
memory/992-55-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/992-67-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/1160-84-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1160-83-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1160-82-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1160-78-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1160-79-0x000000000041C410-mapping.dmp

Download
memory/1236-71-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1236-66-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1236-72-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1236-74-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1236-68-0x00000000004512E0-mapping.dmp

Download
memory/1236-75-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1980-62-0x0000000000401180-mapping.dmp

Download
memory/1980-73-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1980-61-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1980-59-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1980-57-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1980-56-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1980-85-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1980-86-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads