nymaim | 736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc

General

Target

736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc.exe
Size

2.9MB
MD5

db47aacf25945d329957ed38545b9992
SHA1

3d9744e1aff5db72a68391d0904869c576d3416c
SHA256

736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc
SHA512

e0cad7c1fda8993cf6f4ecc5bb6a0abd3fc5ccbaf62da9322105bfe7edd6f87d83bcb4a3f28a6713c311ace53f1955f3629dac9731e862d05269b9099774facf
SSDEEP

49152:Z2IpHDO3y4K2HzhY3Kco6ThyvZcb8S8pbYs7YZ7lXWRsJ65kQGh7ppxaXW6uA5hq:MIK9K2H9d69yvZcAS8pbr7ulX7J6GhUs

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
440	is-DHO9E.tmp
2088	frsearcher70.exe
64	VK45iONTMJK.exe

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	frsearcher70.exe

Loads dropped DLL 1 IoCs

pid	Process
440	is-DHO9E.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\frSearcher\unins000.dat	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-QN61O.tmp	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-PD7LI.tmp	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-ES627.tmp	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-1NPK6.tmp	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-T3ILM.tmp	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-OLH3N.tmp	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-R7FMF.tmp	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-6KLCI.tmp	is-DHO9E.tmp
File created	C:\Program Files (x86)\frSearcher\is-8ETOM.tmp	is-DHO9E.tmp
File opened for modification	C:\Program Files (x86)\frSearcher\unins000.dat	is-DHO9E.tmp
File opened for modification	C:\Program Files (x86)\frSearcher\frsearcher70.exe	is-DHO9E.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1532	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2088	frsearcher70.exe
2088	frsearcher70.exe
2088	frsearcher70.exe
2088	frsearcher70.exe
2088	frsearcher70.exe
2088	frsearcher70.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1532	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 440	3968	736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc.exe	80
PID 3968 wrote to memory of 440	3968	736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc.exe	80
PID 3968 wrote to memory of 440	3968	736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc.exe	80
PID 440 wrote to memory of 2088	440	is-DHO9E.tmp	81
PID 440 wrote to memory of 2088	440	is-DHO9E.tmp	81
PID 440 wrote to memory of 2088	440	is-DHO9E.tmp	81
PID 2088 wrote to memory of 64	2088	frsearcher70.exe	82
PID 2088 wrote to memory of 64	2088	frsearcher70.exe	82
PID 2088 wrote to memory of 64	2088	frsearcher70.exe	82
PID 2088 wrote to memory of 4092	2088	frsearcher70.exe	84
PID 2088 wrote to memory of 4092	2088	frsearcher70.exe	84
PID 2088 wrote to memory of 4092	2088	frsearcher70.exe	84
PID 4092 wrote to memory of 1532	4092	cmd.exe	86
PID 4092 wrote to memory of 1532	4092	cmd.exe	86
PID 4092 wrote to memory of 1532	4092	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc.exe
"C:\Users\Admin\AppData\Local\Temp\736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Users\Admin\AppData\Local\Temp\is-3FTNQ.tmp\is-DHO9E.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3FTNQ.tmp\is-DHO9E.tmp" /SL4 $90040 "C:\Users\Admin\AppData\Local\Temp\736015b58a7c5ddc28426dc20b41496a31bea675d5a11b176930be1cbf65ebdc.exe" 2754496 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:440
- - C:\Program Files (x86)\frSearcher\frsearcher70.exe
    "C:\Program Files (x86)\frSearcher\frsearcher70.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2088
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\VK45iONTMJK.exe
      4⤵
      Executes dropped EXE
      PID:64
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "frsearcher70.exe" /f & erase "C:\Program Files (x86)\frSearcher\frsearcher70.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4092
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "frsearcher70.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1532

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\frSearcher\frsearcher70.exe

Filesize
4.3MB

MD5
4c0a79ec18ab532ac11deb3ed0193d95

SHA1
8450496be2041c46df3fbbd5a8b3dc2e16094288

SHA256
d2500e49b379a3012cea234495caf4aac67bfca17898cd855975a33c595109f0

SHA512
ed4e84c06dc206bc73205ee2caa711bf8fe6448b44834e088cecef5d77ed277ba79ef515be1166952100f59061f14fbe3d9ebcb95e0667efd04b54f6b710b3ea

Download Submit
C:\Program Files (x86)\frSearcher\frsearcher70.exe

Filesize
4.3MB

MD5
4c0a79ec18ab532ac11deb3ed0193d95

SHA1
8450496be2041c46df3fbbd5a8b3dc2e16094288

SHA256
d2500e49b379a3012cea234495caf4aac67bfca17898cd855975a33c595109f0

SHA512
ed4e84c06dc206bc73205ee2caa711bf8fe6448b44834e088cecef5d77ed277ba79ef515be1166952100f59061f14fbe3d9ebcb95e0667efd04b54f6b710b3ea

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3FTNQ.tmp\is-DHO9E.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3FTNQ.tmp\is-DHO9E.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-DNEAD.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\VK45iONTMJK.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\VK45iONTMJK.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2088-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2088-144-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download
memory/2088-142-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download
memory/2088-143-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download
memory/2088-152-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download
memory/2088-155-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download
memory/3968-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3968-138-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3968-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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