isrstealer | 723653126eb7214b142d0e0c6689158f3acebc548a38f704e979347e2290a5cc

General

Target

ce1e7349486456b3c57a5266260f3393.exe
Size

1001KB
MD5

ce1e7349486456b3c57a5266260f3393
SHA1

0f48649519bf91e15b57650ba84a5a4a7da5c0ca
SHA256

723653126eb7214b142d0e0c6689158f3acebc548a38f704e979347e2290a5cc
SHA512

6c37b2cb3f1db56dc3f9139fd70456aee25ea5a50973e86b3585b4f0cba0661433ee0ae260b7d25886c5fd3fba3b6323458b16683638607e417b54b3dd5b408d
SSDEEP

24576:s6unKM3YweVE6GWmLPSaGa4pFPxHCjt2:OJ3YweDGWcSxa4pF5Hs

Score

10^/10

isrstealer spyware 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 3 IoCs

resource	yara_rule
behavioral2/memory/5072-18-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/5072-21-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/5072-34-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	ce1e7349486456b3c57a5266260f3393.exe

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

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3852-25-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3852-27-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3852-28-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3852-29-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3852-31-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1064 set thread context of 5072	1064	ce1e7349486456b3c57a5266260f3393.exe	105
PID 5072 set thread context of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 set thread context of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4800	780	WerFault.exe	107
1564	780	WerFault.exe	107

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3984	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1064	ce1e7349486456b3c57a5266260f3393.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	ce1e7349486456b3c57a5266260f3393.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5072	ce1e7349486456b3c57a5266260f3393.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 3984	1064	ce1e7349486456b3c57a5266260f3393.exe	103
PID 1064 wrote to memory of 3984	1064	ce1e7349486456b3c57a5266260f3393.exe	103
PID 1064 wrote to memory of 3984	1064	ce1e7349486456b3c57a5266260f3393.exe	103
PID 1064 wrote to memory of 5072	1064	ce1e7349486456b3c57a5266260f3393.exe	105
PID 1064 wrote to memory of 5072	1064	ce1e7349486456b3c57a5266260f3393.exe	105
PID 1064 wrote to memory of 5072	1064	ce1e7349486456b3c57a5266260f3393.exe	105
PID 1064 wrote to memory of 5072	1064	ce1e7349486456b3c57a5266260f3393.exe	105
PID 1064 wrote to memory of 5072	1064	ce1e7349486456b3c57a5266260f3393.exe	105
PID 1064 wrote to memory of 5072	1064	ce1e7349486456b3c57a5266260f3393.exe	105
PID 1064 wrote to memory of 5072	1064	ce1e7349486456b3c57a5266260f3393.exe	105
PID 5072 wrote to memory of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 wrote to memory of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 wrote to memory of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 wrote to memory of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 wrote to memory of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 wrote to memory of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 wrote to memory of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 wrote to memory of 3852	5072	ce1e7349486456b3c57a5266260f3393.exe	106
PID 5072 wrote to memory of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107
PID 5072 wrote to memory of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107
PID 5072 wrote to memory of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107
PID 5072 wrote to memory of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107
PID 5072 wrote to memory of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107
PID 5072 wrote to memory of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107
PID 5072 wrote to memory of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107
PID 5072 wrote to memory of 780	5072	ce1e7349486456b3c57a5266260f3393.exe	107

C:\Users\Admin\AppData\Local\Temp\ce1e7349486456b3c57a5266260f3393.exe
"C:\Users\Admin\AppData\Local\Temp\ce1e7349486456b3c57a5266260f3393.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PdacbsPcya" /XML "C:\Users\Admin\AppData\Local\Temp\tmp899D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3984
- C:\Users\Admin\AppData\Local\Temp\ce1e7349486456b3c57a5266260f3393.exe
  "C:\Users\Admin\AppData\Local\Temp\ce1e7349486456b3c57a5266260f3393.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5072
- - C:\Users\Admin\AppData\Local\Temp\ce1e7349486456b3c57a5266260f3393.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\6qjDx3zxPu.ini"
    3⤵
    PID:3852
- - C:\Users\Admin\AppData\Local\Temp\ce1e7349486456b3c57a5266260f3393.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\m9OVrAlS7H.ini"
    3⤵
    PID:780
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 780 -s 12
      4⤵
      Program crash
      PID:4800
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 780 -s 52
      4⤵
      Program crash
      PID:1564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 780 -ip 780
1⤵
PID:4536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 780 -ip 780
1⤵
PID:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\6qjDx3zxPu.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp899D.tmp

Filesize
1KB

MD5
b8f7bda2e5262c04afc9ba7169921732

SHA1
d4306e109f44d94d86bc1bdf97416594a496a398

SHA256
c50efb60fe66b241117b2a73a4a87f06d3bd8201372defa73f982ce82d241448

SHA512
81f97d8e6586b0c63b74f930f44afcbea449fd8ab41e13bdce5d5fd4205cbda605070a9c4f4aa28442fd20a27c807edacb063a7142129fee523100f3808fb011

Download Submit
memory/1064-12-0x000000000BE60000-0x000000000BEAE000-memory.dmp

Filesize
312KB

Download
memory/1064-4-0x0000000005B30000-0x0000000005BC2000-memory.dmp

Filesize
584KB

Download
memory/1064-2-0x00000000059F0000-0x0000000005A8C000-memory.dmp

Filesize
624KB

Download
memory/1064-5-0x0000000005DA0000-0x0000000005DB0000-memory.dmp

Filesize
64KB

Download
memory/1064-6-0x0000000005AD0000-0x0000000005ADA000-memory.dmp

Filesize
40KB

Download
memory/1064-7-0x0000000005D20000-0x0000000005D76000-memory.dmp

Filesize
344KB

Download
memory/1064-8-0x0000000005CC0000-0x0000000005CD8000-memory.dmp

Filesize
96KB

Download
memory/1064-9-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/1064-0-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/1064-11-0x0000000009630000-0x00000000096EE000-memory.dmp

Filesize
760KB

Download
memory/1064-1-0x0000000000F40000-0x0000000001040000-memory.dmp

Filesize
1024KB

Download
memory/1064-3-0x0000000006040000-0x00000000065E4000-memory.dmp

Filesize
5.6MB

Download
memory/1064-10-0x0000000005DA0000-0x0000000005DB0000-memory.dmp

Filesize
64KB

Download
memory/1064-24-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/3852-25-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3852-27-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3852-28-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3852-29-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3852-31-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5072-21-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/5072-34-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/5072-18-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads