nymaim | 32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5

General

Target

32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe
Size

2.3MB
MD5

1ccf89699954b4eeb912215a74f2e569
SHA1

f2fc990392503a4acabce5829a1bbbd4c343449a
SHA256

32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5
SHA512

2bbbe8c171ad0aed6280c08fb3d765ce565b29751887f8108a397262fa231cdf28649bc2bb8f43c793dab69cf4ebed141ed5bd58f0f40f3e6f2ac1b88382ccea
SSDEEP

49152:Z0PBT0MNvq4c+SuMOTmo2X5AZjsaKobSkxAjlVIJ7O/d3Hx:Z0PBT0MFXvXdLjAobrNJQR

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
2460	is-C9F7J.tmp
360	ocFolders.exe
1224	sdqlB.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	ocFolders.exe

Loads dropped DLL 1 IoCs

pid	Process
2460	is-C9F7J.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 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\is-SEP1F.tmp	is-C9F7J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-F3RJ2.tmp	is-C9F7J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-MOU26.tmp	is-C9F7J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-HRV24.tmp	is-C9F7J.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\ocFolders.exe	is-C9F7J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-GFSTJ.tmp	is-C9F7J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-E7J71.tmp	is-C9F7J.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-C9F7J.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-C9F7J.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
1100	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
360	ocFolders.exe
360	ocFolders.exe
360	ocFolders.exe
360	ocFolders.exe
360	ocFolders.exe
360	ocFolders.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1100	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4552 wrote to memory of 2460	4552	32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe	81
PID 4552 wrote to memory of 2460	4552	32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe	81
PID 4552 wrote to memory of 2460	4552	32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe	81
PID 2460 wrote to memory of 360	2460	is-C9F7J.tmp	82
PID 2460 wrote to memory of 360	2460	is-C9F7J.tmp	82
PID 2460 wrote to memory of 360	2460	is-C9F7J.tmp	82
PID 360 wrote to memory of 1224	360	ocFolders.exe	83
PID 360 wrote to memory of 1224	360	ocFolders.exe	83
PID 360 wrote to memory of 1224	360	ocFolders.exe	83
PID 360 wrote to memory of 440	360	ocFolders.exe	91
PID 360 wrote to memory of 440	360	ocFolders.exe	91
PID 360 wrote to memory of 440	360	ocFolders.exe	91
PID 440 wrote to memory of 1100	440	cmd.exe	93
PID 440 wrote to memory of 1100	440	cmd.exe	93
PID 440 wrote to memory of 1100	440	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe
"C:\Users\Admin\AppData\Local\Temp\32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Users\Admin\AppData\Local\Temp\is-KBSS9.tmp\is-C9F7J.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-KBSS9.tmp\is-C9F7J.tmp" /SL4 $D003C "C:\Users\Admin\AppData\Local\Temp\32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe" 2163478 169984
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2460
- - C:\Program Files (x86)\PrintFolders\ocFolders.exe
    "C:\Program Files (x86)\PrintFolders\ocFolders.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:360
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\sdqlB.exe
      4⤵
      Executes dropped EXE
      PID:1224
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ocFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\ocFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:440
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ocFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1100

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)\PrintFolders\ocFolders.exe

Filesize
3.6MB

MD5
c5658f0319ca7c3d9807c5beb89ef971

SHA1
f4e0446a32682ee753daffd61a014f423e2b22cd

SHA256
e64de561fb3a09bd67143b5057113068dd5a9aa9274cc7d5dda1c54af8f75daa

SHA512
06f019fcb4b3c771514d6919c68cfaf0c2650243958d937880c6ca5e8f136cf5b7949245523eb57894bcbd251af94584393f8859a399643622e6597bfcfca4ce

Download Submit
C:\Program Files (x86)\PrintFolders\ocFolders.exe

Filesize
3.6MB

MD5
c5658f0319ca7c3d9807c5beb89ef971

SHA1
f4e0446a32682ee753daffd61a014f423e2b22cd

SHA256
e64de561fb3a09bd67143b5057113068dd5a9aa9274cc7d5dda1c54af8f75daa

SHA512
06f019fcb4b3c771514d6919c68cfaf0c2650243958d937880c6ca5e8f136cf5b7949245523eb57894bcbd251af94584393f8859a399643622e6597bfcfca4ce

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-KBSS9.tmp\is-C9F7J.tmp

Filesize
759KB

MD5
d35c838e416f6a317c90117cc834b92b

SHA1
289a030cc78131163a8d6bc3c5dd831ac0f962a1

SHA256
2d4703dac05e8e6d136a8173f84d2618b54b6e7ef44ae5557350614bbb5a9797

SHA512
9a50f934c199b4415911cae873cebd46f682526290b41a42a882a580fed67c99f5248abfbaa367f20b471564b4cf6d62f28ed2c945206267b37788f94377f167

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-KBSS9.tmp\is-C9F7J.tmp

Filesize
759KB

MD5
d35c838e416f6a317c90117cc834b92b

SHA1
289a030cc78131163a8d6bc3c5dd831ac0f962a1

SHA256
2d4703dac05e8e6d136a8173f84d2618b54b6e7ef44ae5557350614bbb5a9797

SHA512
9a50f934c199b4415911cae873cebd46f682526290b41a42a882a580fed67c99f5248abfbaa367f20b471564b4cf6d62f28ed2c945206267b37788f94377f167

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\sdqlB.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\sdqlB.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/360-143-0x0000000000400000-0x000000000158D000-memory.dmp

Filesize
17.6MB

Download
memory/360-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/360-142-0x0000000000400000-0x000000000158D000-memory.dmp

Filesize
17.6MB

Download
memory/360-155-0x0000000000400000-0x000000000158D000-memory.dmp

Filesize
17.6MB

Download
memory/360-144-0x0000000000400000-0x000000000158D000-memory.dmp

Filesize
17.6MB

Download
memory/360-152-0x0000000000400000-0x000000000158D000-memory.dmp

Filesize
17.6MB

Download
memory/4552-137-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4552-132-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4552-156-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

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